#181D66#181D66

#181D66 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.3% C 0.126 H 272.2°. Best body text is #FFFFFF at 14.93:1 contrast (WCAG AA passes).

Color values

HEX	#181D66
RGB	rgb(24, 29, 102)
HSL	hsl(236, 62%, 25%)
HSV	hsv(236, 76%, 40%)
CMYK	cmyk(76.5%, 71.6%, 0%, 60%)
CIE-LAB	lab(15.65, 25.24, -43.38)
CIE-LCH	lch(15.65, 50.18, 300.19°)
OKLab	oklab(28.32% 0.0049 -0.1254)
OKLCH	oklch(28.32% 0.126 272.2)
XYZ	xyz(3.2135, 2.0319, 12.7906)
Luminance	0.0203 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D66 #666118

analogous

#184466 #181D66 #3A1866

triadic

#181D66 #66181D #1D6618

tetradic

#181D66 #661844 #666118 #18663A

square

#181D66 #661844 #666118 #18663A

split-complementary

#181D66 #663A18 #446618

monochromatic

#060719 #0C0F34 #181D66 #242B98 #2F39C9

Accessibility & contrast

On white

14.93

#181D66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#181D66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D66

14.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D66	#FFFFFF	#000000	##FFFFFF
##181D66	1.00	14.93	1.41	14.93
#FFFFFF	14.93	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B68

Deuteranopia (green-blind)

#002365

Tritanopia (blue-blind)

#00313E

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #181d66;
/* rgb */ color: rgb(24, 29, 102);
/* oklch */ color: oklch(28.3% 0.126 272.2);

Tailwind

colors: {
  custom: {
    50: '#625992',
    500: '#181d66',
    950: '#000000',
  },
}

SCSS

$custom: #181d66;
$custom-light: #625992;
$custom-dark: #000000;

JSON

{
  "hex": "#181d66",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 102
  },
  "hsl": {
    "h": 236.154,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.28322,
    "c": 0.1255,
    "h": 272.2
  },
  "luminance": 0.02032
}

Semantic roles & 50–950 ramp

primary

#181D66

secondary

#9C963E

accent

#DB43E5

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #181D66

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

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