#181D45#181D45

#181D45 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.1% C 0.075 H 274.4°. Best body text is #FFFFFF at 16.15:1 contrast (WCAG AA passes).

Color values

HEX	#181D45
RGB	rgb(24, 29, 69)
HSL	hsl(233, 48%, 18%)
HSV	hsv(233, 65%, 27%)
CMYK	cmyk(65.2%, 58%, 0%, 72.9%)
CIE-LAB	lab(12.62, 12.08, -25.99)
CIE-LCH	lch(12.62, 28.66, 294.93°)
OKLab	oklab(25.14% 0.0057 -0.0744)
OKLCH	oklch(25.14% 0.075 274.4)
XYZ	xyz(1.8899, 1.5024, 5.8195)
Luminance	0.0150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D45 #454018

analogous

#183345 #181D45 #291845

triadic

#181D45 #45181D #1D4518

tetradic

#181D45 #451833 #454018 #184529

square

#181D45 #451833 #454018 #184529

split-complementary

#181D45 #452918 #334518

monochromatic

#080A17 #080A18 #181D45 #283072 #3843A0

Accessibility & contrast

On white

16.15

#181D45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#181D45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D45

16.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D45	#FFFFFF	#000000	##FFFFFF
##181D45	1.00	16.15	1.30	16.15
#FFFFFF	16.15	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#072346

Deuteranopia (green-blind)

#011F44

Tritanopia (blue-blind)

#00262D

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #181d45;
/* rgb */ color: rgb(24, 29, 69);
/* oklch */ color: oklch(25.1% 0.075 274.4);

Tailwind

colors: {
  custom: {
    50: '#5a5879',
    500: '#181d45',
    950: '#000000',
  },
}

SCSS

$custom: #181d45;
$custom-light: #5a5879;
$custom-dark: #000000;

JSON

{
  "hex": "#181d45",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 69
  },
  "hsl": {
    "h": 233.333,
    "s": 48.387,
    "l": 18.235
  },
  "oklch": {
    "l": 0.25141,
    "c": 0.07458,
    "h": 274.4
  },
  "luminance": 0.01503
}

Semantic roles & 50–950 ramp

primary

#181D45

secondary

#7C753D

accent

#C950D8

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #181D45

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

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