#255B8B#255B8B
#255B8B is a mid, moderate cyan. Relative luminance 0.097; OKLCH L 45.9% C 0.097 H 248.5°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).
Color values
| HEX | #255B8B |
|---|---|
| RGB | rgb(37, 91, 139) |
| HSL | hsl(208, 58%, 35%) |
| HSV | hsv(208, 73%, 55%) |
| CMYK | cmyk(73.4%, 34.5%, 0%, 45.5%) |
| CIE-LAB | lab(37.37, -0.78, -31.77) |
| CIE-LCH | lch(37.37, 31.78, 268.60°) |
| OKLab | oklab(45.9% -0.0356 -0.0902) |
| OKLCH | oklch(45.9% 0.097 248.5) |
| XYZ | xyz(9.1625, 9.7386, 25.8179) |
| Luminance | 0.0974 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Light Navy Blue
#2E5A88
ΔE00 1.43
Denim (survey)
#3B638C
ΔE00 3.47
Deep Sea Blue
#015482
ΔE00 3.51
Dusk Blue
#26538D
ΔE00 3.59
Light Navy
#155084
ΔE00 3.72
Denim Blue
#3B5B92
ΔE00 4.51
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#255B8B #8B5525
analogous
#258B88 #255B8B #25288B
triadic
#255B8B #8B255B #5B8B25
tetradic
#255B8B #88258B #8B5525 #288B25
square
#255B8B #88258B #8B5525 #288B25
split-complementary
#255B8B #8B2528 #8B8825
monochromatic
#0B1C2A #183B5B #255B8B #327BBB #5899D3
Accessibility & contrast
On white
7.12
#255B8B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.95
#255B8B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #255B8B
7.12:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##255B8B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##255B8B | 1.00 | 7.12 | 2.95 | 7.12 |
| #FFFFFF | 7.12 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.95 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.12 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#455D8D
Deuteranopia (green-blind)
#37548A
Tritanopia (blue-blind)
#00666C
Achromatopsia (no color)
#585858
Design tokens & code
CSS
--color: #255b8b; /* rgb */ color: rgb(37, 91, 139); /* oklch */ color: oklch(45.9% 0.097 248.5);
Tailwind
colors: {
custom: {
50: '#6d89ad',
500: '#255b8b',
950: '#000000',
},
}SCSS
$custom: #255b8b; $custom-light: #6d89ad; $custom-dark: #000000;
JSON
{
"hex": "#255b8b",
"rgb": {
"r": 37,
"g": 91,
"b": 139
},
"hsl": {
"h": 208.235,
"s": 57.955,
"l": 34.51
},
"oklch": {
"l": 0.45903,
"c": 0.09693,
"h": 248.5
},
"luminance": 0.0974
}Semantic roles & 50–950 ramp
primary
#255B8B
secondary
#B78355
accent
#8F47E1
background
#F7F8FA
surface
#EDEFF4
border
#C8CACE
text
#080B10
muted
#7B7C7F