#181771#181771

#181771 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.6% C 0.147 H 272.5°. Best body text is #FFFFFF at 15.00:1 contrast (WCAG AA passes).

Color values

HEX	#181771
RGB	rgb(24, 23, 113)
HSL	hsl(241, 66%, 27%)
HSV	hsv(241, 80%, 44%)
CMYK	cmyk(78.8%, 79.6%, 0%, 55.7%)
CIE-LAB	lab(15.48, 33.19, -50.85)
CIE-LCH	lch(15.48, 60.72, 303.13°)
OKLab	oklab(28.56% 0.0064 -0.1472)
OKLCH	oklch(28.56% 0.147 272.5)
XYZ	xyz(3.6627, 1.9988, 15.8124)
Luminance	0.0200 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181771 #707117

analogous

#174371 #181771 #451771

triadic

#181771 #711817 #177118

tetradic

#181771 #711743 #707117 #177145

square

#181771 #711743 #707117 #177145

split-complementary

#181771 #714517 #437117

monochromatic

#050519 #0D0D3E #181771 #2321A4 #302ED4

Accessibility & contrast

On white

15.00

#181771 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#181771 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181771

15.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181771	#FFFFFF	#000000	##FFFFFF
##181771	1.00	15.00	1.40	15.00
#FFFFFF	15.00	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B74

Deuteranopia (green-blind)

#00226F

Tritanopia (blue-blind)

#003243

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #181771;
/* rgb */ color: rgb(24, 23, 113);
/* oklch */ color: oklch(28.6% 0.147 272.5);

Tailwind

colors: {
  custom: {
    50: '#66559b',
    500: '#181771',
    950: '#000000',
  },
}

SCSS

$custom: #181771;
$custom-light: #66559b;
$custom-dark: #000000;

JSON

{
  "hex": "#181771",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 113
  },
  "hsl": {
    "h": 240.667,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.28563,
    "c": 0.14731,
    "h": 272.5
  },
  "luminance": 0.01999
}

Semantic roles & 50–950 ramp

primary

#181771

secondary

#A5A73D

accent

#E93FE7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181771

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

Preview Lab → · Contrast checker → · Palette generator →