#183151#183151

#183151 is a dark, moderate cyan. Relative luminance 0.030; OKLCH L 31.1% C 0.066 H 255.5°. Best body text is #FFFFFF at 13.15:1 contrast (WCAG AA passes).

Color values

HEX	#183151
RGB	rgb(24, 49, 81)
HSL	hsl(214, 54%, 21%)
HSV	hsv(214, 70%, 32%)
CMYK	cmyk(70.4%, 39.5%, 0%, 68.2%)
CIE-LAB	lab(19.98, 2.21, -22.43)
CIE-LCH	lch(19.98, 22.54, 275.62°)
OKLab	oklab(31.06% -0.0165 -0.0636)
OKLCH	oklch(31.06% 0.066 255.5)
XYZ	xyz(2.9597, 2.9846, 8.2031)
Luminance	0.0299 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183151 #513818

analogous

#184D51 #183151 #1B1851

triadic

#183151 #511831 #315118

tetradic

#183151 #51184D #513818 #18511B

square

#183151 #51184D #513818 #18511B

split-complementary

#183151 #511B18 #4D5118

monochromatic

#070E18 #0A1422 #183151 #264E80 #346AAF

Accessibility & contrast

On white

13.15

#183151 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#183151 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183151

13.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183151	#FFFFFF	#000000	##FFFFFF
##183151	1.00	13.15	1.60	13.15
#FFFFFF	13.15	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#233352

Deuteranopia (green-blind)

#1B2E50

Tritanopia (blue-blind)

#00383D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #183151;
/* rgb */ color: rgb(24, 49, 81);
/* oklch */ color: oklch(31.1% 0.066 255.5);

Tailwind

colors: {
  custom: {
    50: '#5c6882',
    500: '#183151',
    950: '#000000',
  },
}

SCSS

$custom: #183151;
$custom-light: #5c6882;
$custom-dark: #000000;

JSON

{
  "hex": "#183151",
  "rgb": {
    "r": 24,
    "g": 49,
    "b": 81
  },
  "hsl": {
    "h": 213.684,
    "s": 54.286,
    "l": 20.588
  },
  "oklch": {
    "l": 0.31061,
    "c": 0.06576,
    "h": 255.5
  },
  "luminance": 0.02985
}

Semantic roles & 50–950 ramp

primary

#183151

secondary

#88673D

accent

#9D4ADE

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04060A

muted

#797A7C

Preview Lab

Preview with #183151

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

Preview Lab → · Contrast checker → · Palette generator →