#181E5A#181E5A

#181E5A is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.3% C 0.107 H 272.7°. Best body text is #FFFFFF at 15.30:1 contrast (WCAG AA passes).

Color values

HEX	#181E5A
RGB	rgb(24, 30, 90)
HSL	hsl(235, 58%, 22%)
HSV	hsv(235, 73%, 35%)
CMYK	cmyk(73.3%, 66.7%, 0%, 64.7%)
CIE-LAB	lab(14.74, 19.80, -36.90)
CIE-LCH	lch(14.74, 41.88, 298.22°)
OKLab	oklab(27.29% 0.0051 -0.1064)
OKLCH	oklch(27.29% 0.107 272.7)
XYZ	xyz(2.6858, 1.8607, 9.8885)
Luminance	0.0186 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E5A #5A5418

analogous

#183F5A #181E5A #33185A

triadic

#181E5A #5A181E #1E5A18

tetradic

#181E5A #5A183F #5A5418 #185A33

square

#181E5A #5A183F #5A5418 #185A33

split-complementary

#181E5A #5A3318 #3F5A18

monochromatic

#060818 #0B0E2A #181E5A #252E8A #323EBB

Accessibility & contrast

On white

15.30

#181E5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#181E5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E5A

15.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E5A	#FFFFFF	#000000	##FFFFFF
##181E5A	1.00	15.30	1.37	15.30
#FFFFFF	15.30	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285C

Deuteranopia (green-blind)

#002259

Tritanopia (blue-blind)

#002D38

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #181e5a;
/* rgb */ color: rgb(24, 30, 90);
/* oklch */ color: oklch(27.3% 0.107 272.7);

Tailwind

colors: {
  custom: {
    50: '#5f5989',
    500: '#181e5a',
    950: '#000000',
  },
}

SCSS

$custom: #181e5a;
$custom-light: #5f5989;
$custom-dark: #000000;

JSON

{
  "hex": "#181e5a",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 90
  },
  "hsl": {
    "h": 234.545,
    "s": 57.895,
    "l": 22.353
  },
  "oklch": {
    "l": 0.27289,
    "c": 0.10656,
    "h": 272.7
  },
  "luminance": 0.01861
}

Semantic roles & 50–950 ramp

primary

#181E5A

secondary

#91893D

accent

#D347E1

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #181E5A

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

Preview Lab → · Contrast checker → · Palette generator →