#181D9D#181D9D

#181D9D is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.7% C 0.196 H 268.8°. Best body text is #FFFFFF at 12.34:1 contrast (WCAG AA passes).

Color values

HEX	#181D9D
RGB	rgb(24, 29, 157)
HSL	hsl(238, 73%, 35%)
HSV	hsv(238, 85%, 62%)
CMYK	cmyk(84.7%, 81.5%, 0%, 38.4%)
CIE-LAB	lab(21.97, 44.93, -67.79)
CIE-LCH	lch(21.97, 81.33, 303.53°)
OKLab	oklab(34.66% -0.0042 -0.1964)
OKLCH	oklch(34.66% 0.196 268.8)
XYZ	xyz(6.8998, 3.5064, 32.2049)
Luminance	0.0351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D9D #9D9818

analogous

#18609D #181D9D #55189D

triadic

#181D9D #9D181D #1D9D18

tetradic

#181D9D #9D1860 #9D9818 #189D55

square

#181D9D #9D1860 #9D9818 #189D55

split-complementary

#181D9D #9D5518 #609D18

monochromatic

#080933 #101368 #181D9D #2027D2 #4C52E4

Accessibility & contrast

On white

12.34

#181D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#181D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D9D

12.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D9D	#FFFFFF	#000000	##FFFFFF
##181D9D	1.00	12.34	1.70	12.34
#FFFFFF	12.34	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA1

Deuteranopia (green-blind)

#002E9B

Tritanopia (blue-blind)

#00465E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #181d9d;
/* rgb */ color: rgb(24, 29, 157);
/* oklch */ color: oklch(34.7% 0.196 268.8);

Tailwind

colors: {
  custom: {
    50: '#725cbb',
    500: '#181d9d',
    950: '#000000',
  },
}

SCSS

$custom: #181d9d;
$custom-light: #725cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#181d9d",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 157
  },
  "hsl": {
    "h": 237.744,
    "s": 73.481,
    "l": 35.49
  },
  "oklch": {
    "l": 0.34663,
    "c": 0.19642,
    "h": 268.8
  },
  "luminance": 0.03507
}

Semantic roles & 50–950 ramp

primary

#181D9D

secondary

#C5C14B

accent

#E938F0

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #181D9D

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

Preview Lab → · Contrast checker → · Palette generator →