#181E8B#181E8B

#181E8B is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.6% C 0.174 H 269.6°. Best body text is #FFFFFF at 13.15:1 contrast (WCAG AA passes).

Color values

HEX	#181E8B
RGB	rgb(24, 30, 139)
HSL	hsl(237, 71%, 32%)
HSV	hsv(237, 83%, 55%)
CMYK	cmyk(82.7%, 78.4%, 0%, 45.5%)
CIE-LAB	lab(19.99, 38.27, -59.94)
CIE-LCH	lch(19.99, 71.11, 302.56°)
OKLab	oklab(32.65% -0.0012 -0.1736)
OKLCH	oklch(32.65% 0.174 269.6)
XYZ	xyz(5.4996, 2.9862, 24.7076)
Luminance	0.0299 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E8B #8B8518

analogous

#18578B #181E8B #4C188B

triadic

#181E8B #8B181E #1E8B18

tetradic

#181E8B #8B1857 #8B8518 #188B4C

square

#181E8B #8B1857 #8B8518 #188B4C

split-complementary

#181E8B #8B4C18 #578B18

monochromatic

#060723 #0F1357 #181E8B #2129BF #3F48DE

Accessibility & contrast

On white

13.15

#181E8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#181E8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E8B

13.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E8B	#FFFFFF	#000000	##FFFFFF
##181E8B	1.00	13.15	1.60	13.15
#FFFFFF	13.15	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368E

Deuteranopia (green-blind)

#002A89

Tritanopia (blue-blind)

#003F53

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #181e8b;
/* rgb */ color: rgb(24, 30, 139);
/* oklch */ color: oklch(32.6% 0.174 269.6);

Tailwind

colors: {
  custom: {
    50: '#6d5bae',
    500: '#181e8b',
    950: '#000000',
  },
}

SCSS

$custom: #181e8b;
$custom-light: #6d5bae;
$custom-dark: #000000;

JSON

{
  "hex": "#181e8b",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 139
  },
  "hsl": {
    "h": 236.87,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.32645,
    "c": 0.17364,
    "h": 269.6
  },
  "luminance": 0.02987
}

Semantic roles & 50–950 ramp

primary

#181E8B

secondary

#BEB840

accent

#E43AED

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #181E8B

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

Preview Lab → · Contrast checker → · Palette generator →