#183A86#183A86

#183A86 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.3% C 0.134 H 263.2°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#183A86
RGB	rgb(24, 58, 134)
HSL	hsl(221, 70%, 31%)
HSV	hsv(221, 82%, 53%)
CMYK	cmyk(82.1%, 56.7%, 0%, 47.5%)
CIE-LAB	lab(26.57, 17.71, -46.03)
CIE-LCH	lch(26.57, 49.32, 291.04°)
OKLab	oklab(37.32% -0.0157 -0.1328)
OKLCH	oklch(37.32% 0.134 263.2)
XYZ	xyz(6.1913, 4.9408, 23.1770)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A86 #866418

analogous

#187186 #183A86 #2D1886

triadic

#183A86 #86183A #3A8618

tetradic

#183A86 #861871 #866418 #18862D

square

#183A86 #861871 #866418 #18862D

split-complementary

#183A86 #862D18 #718618

monochromatic

#050D1E #0F2452 #183A86 #2150BA #3C6EDC

Accessibility & contrast

On white

10.56

#183A86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#183A86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A86

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A86	#FFFFFF	#000000	##FFFFFF
##183A86	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004489

Deuteranopia (green-blind)

#003A85

Tritanopia (blue-blind)

#004D5A

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183a86;
/* rgb */ color: rgb(24, 58, 134);
/* oklch */ color: oklch(37.3% 0.134 263.2);

Tailwind

colors: {
  custom: {
    50: '#686faa',
    500: '#183a86',
    950: '#000000',
  },
}

SCSS

$custom: #183a86;
$custom-light: #686faa;
$custom-dark: #000000;

JSON

{
  "hex": "#183a86",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 134
  },
  "hsl": {
    "h": 221.455,
    "s": 69.62,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37322,
    "c": 0.13375,
    "h": 263.2
  },
  "luminance": 0.04942
}

Semantic roles & 50–950 ramp

primary

#183A86

secondary

#BA9440

accent

#B63BEC

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #183A86

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

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