#18557C#18557C
#18557C is a dark, moderate cyan. Relative luminance 0.081; OKLCH L 43.1% C 0.088 H 241.7°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).
Color values
| HEX | #18557C |
|---|---|
| RGB | rgb(24, 85, 124) |
| HSL | hsl(203, 68%, 29%) |
| HSV | hsv(203, 81%, 49%) |
| CMYK | cmyk(80.6%, 31.5%, 0%, 51.4%) |
| CIE-LAB | lab(34.28, -4.58, -27.47) |
| CIE-LCH | lch(34.28, 27.85, 260.54°) |
| OKLab | oklab(43.1% -0.0419 -0.0778) |
| OKLCH | oklch(43.1% 0.088 241.7) |
| XYZ | xyz(7.2619, 8.1456, 20.2544) |
| Luminance | 0.0815 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Deep Sea Blue
#015482
ΔE00 1.41
Light Navy
#155084
ΔE00 3.57
Light Navy Blue
#2E5A88
ΔE00 4.14
Dusk Blue
#26538D
ΔE00 5.21
Dark Slate Blue
#214761
ΔE00 5.69
Prussian Blue
#004577
ΔE00 5.92
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#18557C #7C3F18
analogous
#187C71 #18557C #18237C
triadic
#18557C #7C1855 #557C18
tetradic
#18557C #71187C #7C3F18 #237C18
square
#18557C #71187C #7C3F18 #237C18
split-complementary
#18557C #7C1823 #7C7118
monochromatic
#05121A #0E3249 #18557C #2278AF #3699D8
Accessibility & contrast
On white
7.99
#18557C on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#18557C on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #18557C
7.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##18557C | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##18557C | 1.00 | 7.99 | 2.63 | 7.99 |
| #FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#43567E
Deuteranopia (green-blind)
#354C7B
Tritanopia (blue-blind)
#005F63
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #18557c; /* rgb */ color: rgb(24, 85, 124); /* oklch */ color: oklch(43.1% 0.088 241.7);
Tailwind
colors: {
custom: {
50: '#6684a2',
500: '#18557c',
950: '#000000',
},
}SCSS
$custom: #18557c; $custom-light: #6684a2; $custom-dark: #000000;
JSON
{
"hex": "#18557c",
"rgb": {
"r": 24,
"g": 85,
"b": 124
},
"hsl": {
"h": 203.4,
"s": 67.568,
"l": 29.02
},
"oklch": {
"l": 0.43101,
"c": 0.08841,
"h": 241.7
},
"luminance": 0.08146
}Semantic roles & 50–950 ramp
primary
#18557C
secondary
#B16B3F
accent
#813DEA
background
#F6F8FA
surface
#EBEFF3
border
#C6CACD
text
#070A0F
muted
#7A7C7F