#256C8B#256C8B
#256C8B is a mid, moderate cyan. Relative luminance 0.130; OKLCH L 50.2% C 0.085 H 230.9°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).
Color values
| HEX | #256C8B |
|---|---|
| RGB | rgb(37, 108, 139) |
| HSL | hsl(198, 58%, 35%) |
| HSV | hsv(198, 73%, 55%) |
| CMYK | cmyk(73.4%, 22.3%, 0%, 45.5%) |
| CIE-LAB | lab(42.74, -11.11, -23.38) |
| CIE-LCH | lch(42.74, 25.89, 244.58°) |
| OKLab | oklab(50.16% -0.0534 -0.0656) |
| OKLCH | oklch(50.16% 0.085 230.9) |
| XYZ | xyz(10.7838, 12.9813, 26.3584) |
| Luminance | 0.1298 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Sea Blue
#047495
ΔE00 3.36
Ocean Blue (survey)
#03719C
ΔE00 3.48
Ugly Blue
#31668A
ΔE00 4.27
Peacock Blue
#016795
ΔE00 4.49
Cerulean
#007BA7
ΔE00 6.17
Metallic Blue
#4F738E
ΔE00 6.30
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#256C8B #8B4425
analogous
#258B77 #256C8B #25398B
triadic
#256C8B #8B256C #6C8B25
tetradic
#256C8B #77258B #8B4425 #398B25
square
#256C8B #77258B #8B4425 #398B25
split-complementary
#256C8B #8B2539 #8B7725
monochromatic
#0B212A #18465B #256C8B #3292BB #58ADD3
Accessibility & contrast
On white
5.84
#256C8B on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.60
#256C8B on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #256C8B
5.84:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##256C8B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##256C8B | 1.00 | 5.84 | 3.60 | 5.84 |
| #FFFFFF | 5.84 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.60 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.84 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5C6B8D
Deuteranopia (green-blind)
#4E618B
Tritanopia (blue-blind)
#007476
Achromatopsia (no color)
#656565
Design tokens & code
CSS
--color: #256c8b; /* rgb */ color: rgb(37, 108, 139); /* oklch */ color: oklch(50.2% 0.085 230.9);
Tailwind
colors: {
custom: {
50: '#6e96ad',
500: '#256c8b',
950: '#000000',
},
}SCSS
$custom: #256c8b; $custom-light: #6e96ad; $custom-dark: #000000;
JSON
{
"hex": "#256c8b",
"rgb": {
"r": 37,
"g": 108,
"b": 139
},
"hsl": {
"h": 198.235,
"s": 57.955,
"l": 34.51
},
"oklch": {
"l": 0.50155,
"c": 0.08461,
"h": 230.9
},
"luminance": 0.12983
}Semantic roles & 50–950 ramp
primary
#256C8B
secondary
#B77355
accent
#7647E1
background
#F7F9FA
surface
#EDF1F4
border
#C8CBCE
text
#080D10
muted
#7B7E7F