#183451#183451

#183451 is a dark, moderate cyan. Relative luminance 0.032; OKLCH L 31.9% C 0.062 H 251.1°. Best body text is #FFFFFF at 12.74:1 contrast (WCAG AA passes).

Color values

HEX	#183451
RGB	rgb(24, 52, 81)
HSL	hsl(211, 54%, 21%)
HSV	hsv(211, 70%, 32%)
CMYK	cmyk(70.4%, 35.8%, 0%, 68.2%)
CIE-LAB	lab(21.00, 0.10, -20.83)
CIE-LCH	lch(21.00, 20.83, 270.28°)
OKLab	oklab(31.85% -0.0202 -0.0589)
OKLCH	oklch(31.85% 0.062 251.1)
XYZ	xyz(3.0893, 3.2440, 8.2463)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183451 #513518

analogous

#185051 #183451 #181851

triadic

#183451 #511834 #345118

tetradic

#183451 #511850 #513518 #185118

square

#183451 #511850 #513518 #185118

split-complementary

#183451 #511818 #505118

monochromatic

#070F18 #0A1622 #183451 #265280 #3471AF

Accessibility & contrast

On white

12.74

#183451 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#183451 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183451

12.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183451	#FFFFFF	#000000	##FFFFFF
##183451	1.00	12.74	1.65	12.74
#FFFFFF	12.74	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273552

Deuteranopia (green-blind)

#203050

Tritanopia (blue-blind)

#003B3E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #183451;
/* rgb */ color: rgb(24, 52, 81);
/* oklch */ color: oklch(31.9% 0.062 251.1);

Tailwind

colors: {
  custom: {
    50: '#5c6b82',
    500: '#183451',
    950: '#000000',
  },
}

SCSS

$custom: #183451;
$custom-light: #5c6b82;
$custom-dark: #000000;

JSON

{
  "hex": "#183451",
  "rgb": {
    "r": 24,
    "g": 52,
    "b": 81
  },
  "hsl": {
    "h": 210.526,
    "s": 54.286,
    "l": 20.588
  },
  "oklch": {
    "l": 0.31854,
    "c": 0.0623,
    "h": 251.1
  },
  "luminance": 0.03244
}

Semantic roles & 50–950 ramp

primary

#183451

secondary

#88633D

accent

#954ADE

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04060A

muted

#797A7C

Preview Lab

Preview with #183451

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

Preview Lab → · Contrast checker → · Palette generator →