#182F3F#182F3F

#182F3F is a dark, muted cyan. Relative luminance 0.026; OKLCH L 29.4% C 0.041 H 240.5°. Best body text is #FFFFFF at 13.84:1 contrast (WCAG AA passes).

Color values

HEX	#182F3F
RGB	rgb(24, 47, 63)
HSL	hsl(205, 45%, 17%)
HSV	hsv(205, 62%, 25%)
CMYK	cmyk(61.9%, 25.4%, 0%, 75.3%)
CIE-LAB	lab(18.30, -3.44, -12.86)
CIE-LCH	lch(18.30, 13.31, 255.01°)
OKLab	oklab(29.42% -0.0203 -0.0359)
OKLCH	oklch(29.42% 0.041 240.5)
XYZ	xyz(2.2901, 2.5859, 5.0801)
Luminance	0.0259 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182F3F #3F2818

analogous

#183F3C #182F3F #181C3F

triadic

#182F3F #3F182F #2F3F18

tetradic

#182F3F #3C183F #3F2818 #1C3F18

square

#182F3F #3C183F #3F2818 #1C3F18

split-complementary

#182F3F #3F181C #3F3C18

monochromatic

#081116 #081116 #182F3F #29506B #3A7198

Accessibility & contrast

On white

13.84

#182F3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#182F3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182F3F

13.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182F3F	#FFFFFF	#000000	##FFFFFF
##182F3F	1.00	13.84	1.52	13.84
#FFFFFF	13.84	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#282F40

Deuteranopia (green-blind)

#232B3F

Tritanopia (blue-blind)

#013334

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #182f3f;
/* rgb */ color: rgb(24, 47, 63);
/* oklch */ color: oklch(29.4% 0.041 240.5);

Tailwind

colors: {
  custom: {
    50: '#586774',
    500: '#182f3f',
    950: '#000000',
  },
}

SCSS

$custom: #182f3f;
$custom-light: #586774;
$custom-dark: #000000;

JSON

{
  "hex": "#182f3f",
  "rgb": {
    "r": 24,
    "g": 47,
    "b": 63
  },
  "hsl": {
    "h": 204.615,
    "s": 44.828,
    "l": 17.059
  },
  "oklch": {
    "l": 0.29416,
    "c": 0.04126,
    "h": 240.5
  },
  "luminance": 0.02586
}

Semantic roles & 50–950 ramp

primary

#182F3F

secondary

#75543D

accent

#8853D5

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#030608

muted

#787A7B

Preview Lab

Preview with #182F3F

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

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