#21556D#21556D
#21556D is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.6% C 0.068 H 231.4°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).
Color values
| HEX | #21556D |
|---|---|
| RGB | rgb(33, 85, 109) |
| HSL | hsl(199, 54%, 28%) |
| HSV | hsv(199, 70%, 43%) |
| CMYK | cmyk(69.7%, 22%, 0%, 57.3%) |
| CIE-LAB | lab(33.82, -8.88, -18.85) |
| CIE-LCH | lch(33.82, 20.84, 244.77°) |
| OKLab | oklab(42.57% -0.0421 -0.0528) |
| OKLCH | oklch(42.57% 0.068 231.4) |
| XYZ | xyz(6.6349, 7.9238, 15.6448) |
| Luminance | 0.0792 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dark Slate Blue
#214761
ΔE00 5.62
Dark Grey Blue
#29465B
ΔE00 6.13
Deep Sea Blue
#015482
ΔE00 6.42
Ugly Blue
#31668A
ΔE00 7.42
Light Navy
#155084
ΔE00 8.31
Peacock Blue
#016795
ΔE00 8.32
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#21556D #6D3921
analogous
#216D5F #21556D #212F6D
triadic
#21556D #6D2155 #556D21
tetradic
#21556D #5F216D #6D3921 #2F6D21
square
#21556D #5F216D #6D3921 #2F6D21
split-complementary
#21556D #6D212F #6D5F21
monochromatic
#071217 #13303E #21556D #2F7A9C #429CC6
Accessibility & contrast
On white
8.12
#21556D on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.58
#21556D on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #21556D
8.12:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##21556D | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##21556D | 1.00 | 8.12 | 2.58 | 8.12 |
| #FFFFFF | 8.12 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.58 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.12 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#49546E
Deuteranopia (green-blind)
#3E4C6D
Tritanopia (blue-blind)
#005C5D
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #21556d; /* rgb */ color: rgb(33, 85, 109); /* oklch */ color: oklch(42.6% 0.068 231.4);
Tailwind
colors: {
custom: {
50: '#668497',
500: '#21556d',
950: '#000000',
},
}SCSS
$custom: #21556d; $custom-light: #668497; $custom-dark: #000000;
JSON
{
"hex": "#21556d",
"rgb": {
"r": 33,
"g": 85,
"b": 109
},
"hsl": {
"h": 198.947,
"s": 53.521,
"l": 27.843
},
"oklch": {
"l": 0.42571,
"c": 0.06757,
"h": 231.4
},
"luminance": 0.07924
}Semantic roles & 50–950 ramp
primary
#21556D
secondary
#A16549
accent
#794BDD
background
#F6F8F9
surface
#EBEFF2
border
#C6CACC
text
#060B0D
muted
#7A7C7E