#183B48#183B48

#183B48 is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.3% C 0.046 H 225.2°. Best body text is #FFFFFF at 11.95:1 contrast (WCAG AA passes).

Color values

HEX	#183B48
RGB	rgb(24, 59, 72)
HSL	hsl(196, 50%, 19%)
HSV	hsv(196, 67%, 28%)
CMYK	cmyk(66.7%, 18.1%, 0%, 71.8%)
CIE-LAB	lab(22.96, -8.03, -11.77)
CIE-LCH	lch(22.96, 14.25, 235.71°)
OKLab	oklab(33.26% -0.0326 -0.0328)
OKLCH	oklch(33.26% 0.046 225.2)
XYZ	xyz(3.1099, 3.7897, 6.6972)
Luminance	0.0379 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B48 #482518

analogous

#18483D #183B48 #182348

triadic

#183B48 #48183B #3B4818

tetradic

#183B48 #3D1848 #482518 #234818

square

#183B48 #3D1848 #482518 #234818

split-complementary

#183B48 #481823 #483D18

monochromatic

#081317 #09151A #183B48 #276176 #3786A4

Accessibility & contrast

On white

11.95

#183B48 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#183B48 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B48

11.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B48	#FFFFFF	#000000	##FFFFFF
##183B48	1.00	11.95	1.76	11.95
#FFFFFF	11.95	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343A49

Deuteranopia (green-blind)

#2D3548

Tritanopia (blue-blind)

#003F3F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183b48;
/* rgb */ color: rgb(24, 59, 72);
/* oklch */ color: oklch(33.3% 0.046 225.2);

Tailwind

colors: {
  custom: {
    50: '#5a717b',
    500: '#183b48',
    950: '#000000',
  },
}

SCSS

$custom: #183b48;
$custom-light: #5a717b;
$custom-dark: #000000;

JSON

{
  "hex": "#183b48",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 72
  },
  "hsl": {
    "h": 196.25,
    "s": 50,
    "l": 18.824
  },
  "oklch": {
    "l": 0.33262,
    "c": 0.04622,
    "h": 225.2
  },
  "luminance": 0.0379
}

Semantic roles & 50–950 ramp

primary

#183B48

secondary

#7F4F3D

accent

#744EDA

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040709

muted

#797A7B

Preview Lab

Preview with #183B48

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

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