#181D5E#181D5E

#181D5E is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.5% C 0.114 H 272.8°. Best body text is #FFFFFF at 15.26:1 contrast (WCAG AA passes).

Color values

HEX	#181D5E
RGB	rgb(24, 29, 94)
HSL	hsl(236, 59%, 23%)
HSV	hsv(236, 74%, 37%)
CMYK	cmyk(74.5%, 69.1%, 0%, 63.1%)
CIE-LAB	lab(14.85, 22.11, -39.40)
CIE-LCH	lch(14.85, 45.18, 299.30°)
OKLab	oklab(27.49% 0.0056 -0.1138)
OKLCH	oklch(27.49% 0.114 272.8)
XYZ	xyz(2.8358, 1.8808, 10.8011)
Luminance	0.0188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D5E #5E5918

analogous

#18405E #181D5E #36185E

triadic

#181D5E #5E181D #1D5E18

tetradic

#181D5E #5E1840 #5E5918 #185E36

square

#181D5E #5E1840 #5E5918 #185E36

split-complementary

#181D5E #5E3618 #405E18

monochromatic

#060818 #0C0E2D #181D5E #242C8F #313BC0

Accessibility & contrast

On white

15.26

#181D5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#181D5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D5E

15.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D5E	#FFFFFF	#000000	##FFFFFF
##181D5E	1.00	15.26	1.38	15.26
#FFFFFF	15.26	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002960

Deuteranopia (green-blind)

#00225D

Tritanopia (blue-blind)

#002E3A

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #181d5e;
/* rgb */ color: rgb(24, 29, 94);
/* oklch */ color: oklch(27.5% 0.114 272.8);

Tailwind

colors: {
  custom: {
    50: '#60598c',
    500: '#181d5e',
    950: '#000000',
  },
}

SCSS

$custom: #181d5e;
$custom-light: #60598c;
$custom-dark: #000000;

JSON

{
  "hex": "#181d5e",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 94
  },
  "hsl": {
    "h": 235.714,
    "s": 59.322,
    "l": 23.137
  },
  "oklch": {
    "l": 0.27489,
    "c": 0.11391,
    "h": 272.8
  },
  "luminance": 0.01881
}

Semantic roles & 50–950 ramp

primary

#181D5E

secondary

#948E3D

accent

#D745E3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #181D5E

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

Preview Lab → · Contrast checker → · Palette generator →