#181D8D#181D8D

#181D8D is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.7% C 0.177 H 269.6°. Best body text is #FFFFFF at 13.13:1 contrast (WCAG AA passes).

Color values

HEX	#181D8D
RGB	rgb(24, 29, 141)
HSL	hsl(237, 71%, 32%)
HSV	hsv(237, 83%, 55%)
CMYK	cmyk(83%, 79.4%, 0%, 44.7%)
CIE-LAB	lab(20.03, 39.53, -61.13)
CIE-LCH	lch(20.03, 72.80, 302.89°)
OKLab	oklab(32.74% -0.0013 -0.1771)
OKLCH	oklch(32.74% 0.177 269.6)
XYZ	xyz(5.6221, 2.9953, 25.4760)
Luminance	0.0300 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D8D #8D8818

analogous

#18578D #181D8D #4E188D

triadic

#181D8D #8D181D #1D8D18

tetradic

#181D8D #8D1857 #8D8818 #188D4E

square

#181D8D #8D1857 #8D8818 #188D4E

split-complementary

#181D8D #8D4E18 #578D18

monochromatic

#060724 #0F1259 #181D8D #2128C1 #4148DF

Accessibility & contrast

On white

13.13

#181D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#181D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D8D

13.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D8D	#FFFFFF	#000000	##FFFFFF
##181D8D	1.00	13.13	1.60	13.13
#FFFFFF	13.13	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003690

Deuteranopia (green-blind)

#002A8B

Tritanopia (blue-blind)

#003F54

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #181d8d;
/* rgb */ color: rgb(24, 29, 141);
/* oklch */ color: oklch(32.7% 0.177 269.6);

Tailwind

colors: {
  custom: {
    50: '#6d5bb0',
    500: '#181d8d',
    950: '#000000',
  },
}

SCSS

$custom: #181d8d;
$custom-light: #6d5bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#181d8d",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 141
  },
  "hsl": {
    "h": 237.436,
    "s": 70.909,
    "l": 32.353
  },
  "oklch": {
    "l": 0.3274,
    "c": 0.17707,
    "h": 269.6
  },
  "luminance": 0.02996
}

Semantic roles & 50–950 ramp

primary

#181D8D

secondary

#BFBA42

accent

#E63AEE

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#080411

muted

#7B7980

Preview Lab

Preview with #181D8D

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

Preview Lab → · Contrast checker → · Palette generator →