#181657#181657

#181657 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.4% C 0.113 H 276.1°. Best body text is #FFFFFF at 16.26:1 contrast (WCAG AA passes).

Color values

HEX	#181657
RGB	rgb(24, 22, 87)
HSL	hsl(242, 60%, 21%)
HSV	hsv(242, 75%, 34%)
CMYK	cmyk(72.4%, 74.7%, 0%, 65.9%)
CIE-LAB	lab(12.32, 24.26, -38.83)
CIE-LCH	lch(12.32, 45.79, 301.99°)
OKLab	oklab(25.44% 0.012 -0.1121)
OKLCH	oklch(25.44% 0.113 276.1)
XYZ	xyz(2.3833, 1.4559, 9.1704)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181657 #555716

analogous

#163557 #181657 #391657

triadic

#181657 #571816 #165718

tetradic

#181657 #571635 #555716 #165739

square

#181657 #571635 #555716 #165739

split-complementary

#181657 #573916 #355716

monochromatic

#070618 #0B0A26 #181657 #252288 #332FB9

Accessibility & contrast

On white

16.26

#181657 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#181657 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181657

16.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181657	#FFFFFF	#000000	##FFFFFF
##181657	1.00	16.26	1.29	16.26
#FFFFFF	16.26	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002359

Deuteranopia (green-blind)

#001D56

Tritanopia (blue-blind)

#002834

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #181657;
/* rgb */ color: rgb(24, 22, 87);
/* oklch */ color: oklch(25.4% 0.113 276.1);

Tailwind

colors: {
  custom: {
    50: '#5f5387',
    500: '#181657',
    950: '#000000',
  },
}

SCSS

$custom: #181657;
$custom-light: #5f5387;
$custom-dark: #000000;

JSON

{
  "hex": "#181657",
  "rgb": {
    "r": 24,
    "g": 22,
    "b": 87
  },
  "hsl": {
    "h": 241.846,
    "s": 59.633,
    "l": 21.373
  },
  "oklch": {
    "l": 0.25439,
    "c": 0.11278,
    "h": 276.1
  },
  "luminance": 0.01456
}

Semantic roles & 50–950 ramp

primary

#181657

secondary

#8C8E3A

accent

#E345DE

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #181657

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

Preview Lab → · Contrast checker → · Palette generator →