#18557D#18557D

#18557D is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.2% C 0.090 H 242.4°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#18557D
RGB	rgb(24, 85, 125)
HSL	hsl(204, 68%, 29%)
HSV	hsv(204, 81%, 49%)
CMYK	cmyk(80.8%, 32%, 0%, 51%)
CIE-LAB	lab(34.34, -4.19, -28.01)
CIE-LCH	lch(34.34, 28.32, 261.50°)
OKLab	oklab(43.16% -0.0416 -0.0794)
OKLCH	oklch(43.16% 0.09 242.4)
XYZ	xyz(7.3254, 8.1710, 20.5891)
Luminance	0.0817 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18557D #7D4018

analogous

#187D73 #18557D #18237D

triadic

#18557D #7D1855 #557D18

tetradic

#18557D #73187D #7D4018 #237D18

square

#18557D #73187D #7D4018 #237D18

split-complementary

#18557D #7D1823 #7D7318

monochromatic

#05111A #0E324A #18557D #2278B0 #3799D9

Accessibility & contrast

On white

7.97

#18557D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#18557D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18557D

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18557D	#FFFFFF	#000000	##FFFFFF
##18557D	1.00	7.97	2.63	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#42567F

Deuteranopia (green-blind)

#344D7C

Tritanopia (blue-blind)

#005F63

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #18557d;
/* rgb */ color: rgb(24, 85, 125);
/* oklch */ color: oklch(43.2% 0.090 242.4);

Tailwind

colors: {
  custom: {
    50: '#6684a3',
    500: '#18557d',
    950: '#000000',
  },
}

SCSS

$custom: #18557d;
$custom-light: #6684a3;
$custom-dark: #000000;

JSON

{
  "hex": "#18557d",
  "rgb": {
    "r": 24,
    "g": 85,
    "b": 125
  },
  "hsl": {
    "h": 203.762,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.43159,
    "c": 0.08962,
    "h": 242.4
  },
  "luminance": 0.08172
}

Semantic roles & 50–950 ramp

primary

#18557D

secondary

#B26D3F

accent

#823DEB

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #18557D

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →