#182D40#182D40

#182D40 is a dark, muted cyan. Relative luminance 0.024; OKLCH L 28.9% C 0.044 H 247.3°. Best body text is #FFFFFF at 14.11:1 contrast (WCAG AA passes).

Color values

HEX	#182D40
RGB	rgb(24, 45, 64)
HSL	hsl(209, 45%, 17%)
HSV	hsv(209, 63%, 25%)
CMYK	cmyk(62.5%, 29.7%, 0%, 74.9%)
CIE-LAB	lab(17.65, -1.68, -14.56)
CIE-LCH	lch(17.65, 14.66, 263.41°)
OKLab	oklab(28.92% -0.0171 -0.0408)
OKLCH	oklch(28.92% 0.044 247.3)
XYZ	xyz(2.2402, 2.4409, 5.2026)
Luminance	0.0244 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182D40 #402B18

analogous

#18403F #182D40 #181940

triadic

#182D40 #40182D #2D4018

tetradic

#182D40 #3F1840 #402B18 #194018

square

#182D40 #3F1840 #402B18 #194018

split-complementary

#182D40 #401819 #403F18

monochromatic

#081016 #081016 #182D40 #294C6D #396C99

Accessibility & contrast

On white

14.11

#182D40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#182D40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182D40

14.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182D40	#FFFFFF	#000000	##FFFFFF
##182D40	1.00	14.11	1.49	14.11
#FFFFFF	14.11	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#252D41

Deuteranopia (green-blind)

#202940

Tritanopia (blue-blind)

#013134

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #182d40;
/* rgb */ color: rgb(24, 45, 64);
/* oklch */ color: oklch(28.9% 0.044 247.3);

Tailwind

colors: {
  custom: {
    50: '#586575',
    500: '#182d40',
    950: '#000000',
  },
}

SCSS

$custom: #182d40;
$custom-light: #586575;
$custom-dark: #000000;

JSON

{
  "hex": "#182d40",
  "rgb": {
    "r": 24,
    "g": 45,
    "b": 64
  },
  "hsl": {
    "h": 208.5,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.28917,
    "c": 0.04425,
    "h": 247.3
  },
  "luminance": 0.02441
}

Semantic roles & 50–950 ramp

primary

#182D40

secondary

#77583D

accent

#9153D5

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#030508

muted

#787A7B

Preview Lab

Preview with #182D40

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

Preview Lab → · Contrast checker → · Palette generator →