#18557F#18557F

#18557F is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.3% C 0.092 H 243.6°. Best body text is #FFFFFF at 7.94:1 contrast (WCAG AA passes).

Color values

HEX	#18557F
RGB	rgb(24, 85, 127)
HSL	hsl(204, 68%, 30%)
HSV	hsv(204, 81%, 50%)
CMYK	cmyk(81.1%, 33.1%, 0%, 50.2%)
CIE-LAB	lab(34.44, -3.40, -29.07)
CIE-LCH	lch(34.44, 29.27, 263.33°)
OKLab	oklab(43.28% -0.0409 -0.0825)
OKLCH	oklch(43.28% 0.092 243.6)
XYZ	xyz(7.4545, 8.2226, 21.2688)
Luminance	0.0822 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18557F #7F4218

analogous

#187F76 #18557F #18227F

triadic

#18557F #7F1855 #557F18

tetradic

#18557F #76187F #7F4218 #227F18

square

#18557F #76187F #7F4218 #227F18

split-complementary

#18557F #7F1822 #7F7618

monochromatic

#05111A #0E334C #18557F #2277B2 #3898D9

Accessibility & contrast

On white

7.94

#18557F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#18557F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18557F

7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18557F	#FFFFFF	#000000	##FFFFFF
##18557F	1.00	7.94	2.64	7.94
#FFFFFF	7.94	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#415681

Deuteranopia (green-blind)

#334D7E

Tritanopia (blue-blind)

#005F64

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #18557f;
/* rgb */ color: rgb(24, 85, 127);
/* oklch */ color: oklch(43.3% 0.092 243.6);

Tailwind

colors: {
  custom: {
    50: '#6684a4',
    500: '#18557f',
    950: '#000000',
  },
}

SCSS

$custom: #18557f;
$custom-light: #6684a4;
$custom-dark: #000000;

JSON

{
  "hex": "#18557f",
  "rgb": {
    "r": 24,
    "g": 85,
    "b": 127
  },
  "hsl": {
    "h": 204.466,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.43278,
    "c": 0.0921,
    "h": 243.6
  },
  "luminance": 0.08223
}

Semantic roles & 50–950 ramp

primary

#18557F

secondary

#B36F3F

accent

#843DEB

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #18557F

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

Preview Lab → · Contrast checker → · Palette generator →