What color is #21CC00?

#21CC00 is a vivid green, closest to the named color Monstrous Green. It belongs to the green family of colors.

What is the RGB value of #21CC00?

The RGB value is 33, 204, 0: 33 red, 204 green and 0 blue on a 0 to 255 scale.

What is the complementary color of #21CC00?

The complementary color is #AB00CC, found by rotating the hue 180° on the color wheel.

Is black or white text better on #21CC00?

Black text. Black text has a contrast ratio of 9.7:1 and white text 2.16:1. WCAG asks for at least 4.5:1 for normal text.

#21CC00 color

#21CC00 rgb(33, 204, 0)

Shades of green

The hex color #21CC00 is a vivid green.

In the RGB color model it is made of 12.9% red, 80% green and 0% blue (33, 204, 0).

Its hue angle is 110°, with 100% saturation and 40% lightness. For print, the CMYK equivalent is 84% cyan, 0% magenta, 100% yellow and 20% black.

The closest named color is Monstrous Green (#22CC11), a difference of 0.5 ΔE, which is barely visible.

Black text is the more readable choice on this background (contrast 9.7:1).

#21CC00 color codes

HEX	`#21CC00`
RGB	`rgb(33, 204, 0)`
RGB percent	`rgb(12.9%, 80%, 0%)`
HSL	`hsl(110, 100%, 40%)`
HSV / HSB	`hsv(110, 100%, 80%)`
CMYK	`cmyk(84%, 0%, 100%, 20%)`
CIE LAB	`lab(71.9, -70.86, 70.57)`
CIE LCH	`lch(71.9, 100.01, 135.12)`
CIE XYZ	`xyz(22.219, 43.506, 7.227)`
Decimal	`2214912`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #21CC00, based on their position on the color wheel.

Complementary

The color opposite on the color wheel (180°). Strongest contrast.

Analogous

Neighbors 30° either side. Calm, natural combinations.

Split complementary

The two colors next to the complement (150° and 210°).

Triadic

Three colors evenly spaced, 120° apart.

Tetradic (square)

Four colors 90° apart.

Shades, tints and tones

Shades (darker, mixed with black)

Tints (lighter, mixed with white)

Tones (mixed with gray)

Contrast and accessibility

Text on #21CC00	Ratio	AA	AAA	AA large
Sample text	9.7:1	Pass	Pass	Pass
Sample text	2.16:1	Fail	Fail	Fail

#21CC00 as text on	Ratio	AA	AAA	AA large
Sample text	2.16:1	Fail	Fail	Fail
Sample text	9.7:1	Pass	Pass	Pass

WCAG 2 asks for 4.5:1 for normal text (AA), 7:1 for AAA, and 3:1 for large text. Check other pairs.

Color blindness simulation

How #21CC00 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #21cc00; }
.text { color: #21cc00; }
.border { border: 2px solid #21cc00; }
.transparent { background-color: rgb(33 204 0 / 50%); }
.gradient { background: linear-gradient(to right, #21cc00, #00cc45); }

Background

Text color

Border

Similar colors

Questions

What color is #21CC00?: #21CC00 is a vivid green, closest to the named color Monstrous Green. It belongs to the green family of colors.
What is the RGB value of #21CC00?: The RGB value is 33, 204, 0: 33 red, 204 green and 0 blue on a 0 to 255 scale.
What is the complementary color of #21CC00?: The complementary color is #AB00CC, found by rotating the hue 180° on the color wheel.
Is black or white text better on #21CC00?: Black text. Black text has a contrast ratio of 9.7:1 and white text 2.16:1. WCAG asks for at least 4.5:1 for normal text.