#18577E#18577E

#18577E is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.7% C 0.089 H 241.0°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#18577E
RGB	rgb(24, 87, 126)
HSL	hsl(203, 68%, 29%)
HSV	hsv(203, 81%, 49%)
CMYK	cmyk(81%, 31%, 0%, 50.6%)
CIE-LAB	lab(35.04, -5.05, -27.53)
CIE-LCH	lch(35.04, 27.99, 259.60°)
OKLab	oklab(43.73% -0.0432 -0.078)
OKLCH	oklch(43.73% 0.089 241)
XYZ	xyz(7.5493, 8.5160, 20.9805)
Luminance	0.0852 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18577E #7E3F18

analogous

#187E72 #18577E #18247E

triadic

#18577E #7E1857 #577E18

tetradic

#18577E #72187E #7E3F18 #247E18

square

#18577E #72187E #7E3F18 #247E18

split-complementary

#18577E #7E1824 #7E7218

monochromatic

#05121A #0E344B #18577E #227AB1 #379BD9

Accessibility & contrast

On white

7.77

#18577E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#18577E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18577E

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18577E	#FFFFFF	#000000	##FFFFFF
##18577E	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#455880

Deuteranopia (green-blind)

#374E7D

Tritanopia (blue-blind)

#006165

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #18577e;
/* rgb */ color: rgb(24, 87, 126);
/* oklch */ color: oklch(43.7% 0.089 241.0);

Tailwind

colors: {
  custom: {
    50: '#6686a3',
    500: '#18577e',
    950: '#000000',
  },
}

SCSS

$custom: #18577e;
$custom-light: #6686a3;
$custom-dark: #000000;

JSON

{
  "hex": "#18577e",
  "rgb": {
    "r": 24,
    "g": 87,
    "b": 126
  },
  "hsl": {
    "h": 202.941,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.4373,
    "c": 0.08914,
    "h": 241
  },
  "luminance": 0.08517
}

Semantic roles & 50–950 ramp

primary

#18577E

secondary

#B26B3F

accent

#7F3DEB

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #18577E

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

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