#1C508B#1C508B
#1C508B is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.9% C 0.112 H 254.2°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).
Color values
| HEX | #1C508B |
|---|---|
| RGB | rgb(28, 80, 139) |
| HSL | hsl(212, 66%, 33%) |
| HSV | hsv(212, 80%, 55%) |
| CMYK | cmyk(79.9%, 42.4%, 0%, 45.5%) |
| CIE-LAB | lab(33.66, 5.11, -37.68) |
| CIE-LCH | lch(33.66, 38.02, 277.73°) |
| OKLab | oklab(42.92% -0.0306 -0.1077) |
| OKLCH | oklch(42.92% 0.112 254.2) |
| XYZ | xyz(8.0060, 7.8473, 25.5138) |
| Luminance | 0.0785 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dusk Blue
#26538D
ΔE00 1.27
Light Navy
#155084
ΔE00 1.68
Cobalt (survey)
#1E488F
ΔE00 3.44
Light Navy Blue
#2E5A88
ΔE00 3.55
Prussian Blue
#004577
ΔE00 4.37
Twilight Blue
#0A437A
ΔE00 4.43
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1C508B #8B571C
analogous
#1C878B #1C508B #201C8B
triadic
#1C508B #8B1C50 #508B1C
tetradic
#1C508B #8B1C87 #8B571C #1C8B20
square
#1C508B #8B1C87 #8B571C #1C8B20
split-complementary
#1C508B #8B201C #878B1C
monochromatic
#071525 #123358 #1C508B #266DBE #478CDA
Accessibility & contrast
On white
8.17
#1C508B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.57
#1C508B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1C508B
8.17:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1C508B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1C508B | 1.00 | 8.17 | 2.57 | 8.17 |
| #FFFFFF | 8.17 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.57 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.17 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#33558D
Deuteranopia (green-blind)
#204B8A
Tritanopia (blue-blind)
#005E66
Achromatopsia (no color)
#4F4F4F
Design tokens & code
CSS
--color: #1c508b; /* rgb */ color: rgb(28, 80, 139); /* oklch */ color: oklch(42.9% 0.112 254.2);
Tailwind
colors: {
custom: {
50: '#6a80ad',
500: '#1c508b',
950: '#000000',
},
}SCSS
$custom: #1c508b; $custom-light: #6a80ad; $custom-dark: #000000;
JSON
{
"hex": "#1c508b",
"rgb": {
"r": 28,
"g": 80,
"b": 139
},
"hsl": {
"h": 211.892,
"s": 66.467,
"l": 32.745
},
"oklch": {
"l": 0.42922,
"c": 0.11199,
"h": 254.2
},
"luminance": 0.07848
}Semantic roles & 50–950 ramp
primary
#1C508B
secondary
#BC8547
accent
#993EE9
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#070A10
muted
#7A7C7F