#21817E color
The hex color #21817E is a dark, moderate cyan.
In the RGB color model it is made of 12.9% red, 50.6% green and 49.4% blue (33, 129, 126).
Its hue angle is 178°, with 59% saturation and 32% lightness. For print, the CMYK equivalent is 74% cyan, 0% magenta, 2% yellow and 49% black.
The closest named color is Windows 95 Desktop (#018281), a difference of 1.4 ΔE, which is barely visible.
White text is the more readable choice on this background (contrast 4.66:1).
#21817E color codes
| HEX | #21817E | |
|---|---|---|
| RGB | rgb(33, 129, 126) | |
| RGB percent | rgb(12.9%, 50.6%, 49.4%) | |
| HSL | hsl(178, 59%, 32%) | |
| HSV / HSB | hsv(178, 74%, 51%) | |
| CMYK | cmyk(74%, 0%, 2%, 49%) | |
| CIE LAB | lab(48.92, -27.32, -6.26) | |
| CIE LCH | lch(48.92, 28.03, 192.91) | |
| CIE XYZ | xyz(12.242, 17.529, 22.473) | |
| Decimal | 2195838 | |
| Short hex | None (no 3-digit form) |
Color harmonies
Colors that go with #21817E, 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 #21817E | Ratio | AA | AAA | AA large |
|---|---|---|---|---|
| Sample text | 4.51:1 | Pass | Fail | Pass |
| Sample text | 4.66:1 | Pass | Fail | Pass |
| #21817E as text on | Ratio | AA | AAA | AA large |
|---|---|---|---|---|
| Sample text | 4.66:1 | Pass | Fail | Pass |
| Sample text | 4.51:1 | Pass | Fail | 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 #21817E looks to people with the most common types of color vision deficiency.
#797a7eProtanopia
no red cones#6b707fDeuteranopia
no green cones#008580Tritanopia
no blue cones#747474Achromatopsia
no color vision
CSS examples
.background { background-color: #21817e; }
.text { color: #21817e; }
.border { border: 2px solid #21817e; }
.transparent { background-color: rgb(33 129 126 / 50%); }
.gradient { background: linear-gradient(to right, #21817e, #215481); }
Similar colors
#018281Windows 95 Desktop#008080Teal#007c76Wizards Orb#277b74Ivy#247e81Jade Jewel#007b75Emperor Jade#2b8478Emerald Whispers#008b8bDark Cyan
Questions
- What color is #21817E?
- #21817E is a dark, moderate cyan, closest to the named color Windows 95 Desktop. It belongs to the teal family of colors.
- What is the RGB value of #21817E?
- The RGB value is 33, 129, 126: 33 red, 129 green and 126 blue on a 0 to 255 scale.
- What is the complementary color of #21817E?
- The complementary color is #812124, found by rotating the hue 180° on the color wheel.
- Is black or white text better on #21817E?
- White text. Black text has a contrast ratio of 4.51:1 and white text 4.66:1. WCAG asks for at least 4.5:1 for normal text.