#18577F#18577F

#18577F is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.8% C 0.090 H 241.7°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#18577F
RGB	rgb(24, 87, 127)
HSL	hsl(203, 68%, 30%)
HSV	hsv(203, 81%, 50%)
CMYK	cmyk(81.1%, 31.5%, 0%, 50.2%)
CIE-LAB	lab(35.09, -4.66, -28.06)
CIE-LCH	lch(35.09, 28.44, 260.57°)
OKLab	oklab(43.79% -0.0429 -0.0795)
OKLCH	oklch(43.79% 0.09 241.7)
XYZ	xyz(7.6141, 8.5420, 21.3220)
Luminance	0.0854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18577F #7F4018

analogous

#187F74 #18577F #18247F

triadic

#18577F #7F1857 #577F18

tetradic

#18577F #74187F #7F4018 #247F18

square

#18577F #74187F #7F4018 #247F18

split-complementary

#18577F #7F1824 #7F7418

monochromatic

#05121A #0E344C #18577F #227AB2 #389BD9

Accessibility & contrast

On white

7.75

#18577F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#18577F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18577F

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18577F	#FFFFFF	#000000	##FFFFFF
##18577F	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#445881

Deuteranopia (green-blind)

#364E7E

Tritanopia (blue-blind)

#006165

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #18577f;
/* rgb */ color: rgb(24, 87, 127);
/* oklch */ color: oklch(43.8% 0.090 241.7);

Tailwind

colors: {
  custom: {
    50: '#6686a4',
    500: '#18577f',
    950: '#000000',
  },
}

SCSS

$custom: #18577f;
$custom-light: #6686a4;
$custom-dark: #000000;

JSON

{
  "hex": "#18577f",
  "rgb": {
    "r": 24,
    "g": 87,
    "b": 127
  },
  "hsl": {
    "h": 203.301,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.43788,
    "c": 0.09035,
    "h": 241.7
  },
  "luminance": 0.08543
}

Semantic roles & 50–950 ramp

primary

#18577F

secondary

#B36C3F

accent

#803DEB

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #18577F

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

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