#183C85#183C85

#183C85 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.7% C 0.130 H 262.3°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#183C85
RGB	rgb(24, 60, 133)
HSL	hsl(220, 69%, 31%)
HSV	hsv(220, 82%, 52%)
CMYK	cmyk(82%, 54.9%, 0%, 47.8%)
CIE-LAB	lab(27.07, 15.89, -44.59)
CIE-LCH	lch(27.07, 47.33, 289.62°)
OKLab	oklab(37.68% -0.0173 -0.1285)
OKLCH	oklch(37.68% 0.13 262.3)
XYZ	xyz(6.2247, 5.1186, 22.8457)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C85 #856118

analogous

#187285 #183C85 #2A1885

triadic

#183C85 #85183C #3C8518

tetradic

#183C85 #851872 #856118 #18852A

square

#183C85 #851872 #856118 #18852A

split-complementary

#183C85 #852A18 #728518

monochromatic

#050D1D #0F2551 #183C85 #2153B9 #3C71DC

Accessibility & contrast

On white

10.38

#183C85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#183C85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C85

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C85	#FFFFFF	#000000	##FFFFFF
##183C85	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#034588

Deuteranopia (green-blind)

#003B84

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #183c85;
/* rgb */ color: rgb(24, 60, 133);
/* oklch */ color: oklch(37.7% 0.130 262.3);

Tailwind

colors: {
  custom: {
    50: '#6871a9',
    500: '#183c85',
    950: '#000000',
  },
}

SCSS

$custom: #183c85;
$custom-light: #6871a9;
$custom-dark: #000000;

JSON

{
  "hex": "#183c85",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 133
  },
  "hsl": {
    "h": 220.183,
    "s": 69.427,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37679,
    "c": 0.1297,
    "h": 262.3
  },
  "luminance": 0.05119
}

Semantic roles & 50–950 ramp

primary

#183C85

secondary

#B99140

accent

#B23CEC

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #183C85

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

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