#181756#181756

#181756 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.5% C 0.110 H 275.9°. Best body text is #FFFFFF at 16.21:1 contrast (WCAG AA passes).

Color values

HEX	#181756
RGB	rgb(24, 23, 86)
HSL	hsl(241, 58%, 21%)
HSV	hsv(241, 73%, 34%)
CMYK	cmyk(72.1%, 73.3%, 0%, 66.3%)
CIE-LAB	lab(12.47, 23.19, -37.91)
CIE-LCH	lch(12.47, 44.44, 301.45°)
OKLab	oklab(25.51% 0.0114 -0.1094)
OKLCH	oklch(25.51% 0.11 275.9)
XYZ	xyz(2.3622, 1.4787, 8.9632)
Luminance	0.0148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181756 #555617

analogous

#173656 #181756 #381756

triadic

#181756 #561817 #175618

tetradic

#181756 #561736 #555617 #175638

square

#181756 #561736 #555617 #175638

split-complementary

#181756 #563817 #365617

monochromatic

#070618 #0B0A26 #181756 #252486 #3331B7

Accessibility & contrast

On white

16.21

#181756 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#181756 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181756

16.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181756	#FFFFFF	#000000	##FFFFFF
##181756	1.00	16.21	1.30	16.21
#FFFFFF	16.21	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002358

Deuteranopia (green-blind)

#001E55

Tritanopia (blue-blind)

#002834

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #181756;
/* rgb */ color: rgb(24, 23, 86);
/* oklch */ color: oklch(25.5% 0.110 275.9);

Tailwind

colors: {
  custom: {
    50: '#5f5486',
    500: '#181756',
    950: '#000000',
  },
}

SCSS

$custom: #181756;
$custom-light: #5f5486;
$custom-dark: #000000;

JSON

{
  "hex": "#181756",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 86
  },
  "hsl": {
    "h": 240.952,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.25513,
    "c": 0.11004,
    "h": 275.9
  },
  "luminance": 0.01479
}

Semantic roles & 50–950 ramp

primary

#181756

secondary

#8C8D3C

accent

#E147DF

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #181756

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

Preview Lab → · Contrast checker → · Palette generator →