#183C72#183C72

#183C72 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.2% C 0.102 H 258.6°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#183C72
RGB	rgb(24, 60, 114)
HSL	hsl(216, 65%, 27%)
HSV	hsv(216, 79%, 45%)
CMYK	cmyk(78.9%, 47.4%, 0%, 55.3%)
CIE-LAB	lab(25.68, 8.03, -34.86)
CIE-LCH	lch(25.68, 35.77, 282.98°)
OKLab	oklab(36.18% -0.0202 -0.0999)
OKLCH	oklch(36.18% 0.102 258.6)
XYZ	xyz(5.0287, 4.6402, 16.5470)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C72 #724E18

analogous

#186972 #183C72 #211872

triadic

#183C72 #72183C #3C7218

tetradic

#183C72 #721869 #724E18 #187221

square

#183C72 #721869 #724E18 #187221

split-complementary

#183C72 #722118 #697218

monochromatic

#050D19 #0D213F #183C72 #2357A5 #3172D4

Accessibility & contrast

On white

10.89

#183C72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#183C72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C72

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C72	#FFFFFF	#000000	##FFFFFF
##183C72	1.00	10.89	1.93	10.89
#FFFFFF	10.89	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204174

Deuteranopia (green-blind)

#0D3971

Tritanopia (blue-blind)

#004951

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183c72;
/* rgb */ color: rgb(24, 60, 114);
/* oklch */ color: oklch(36.2% 0.102 258.6);

Tailwind

colors: {
  custom: {
    50: '#63719b',
    500: '#183c72',
    950: '#000000',
  },
}

SCSS

$custom: #183c72;
$custom-light: #63719b;
$custom-dark: #000000;

JSON

{
  "hex": "#183c72",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 114
  },
  "hsl": {
    "h": 216,
    "s": 65.217,
    "l": 27.059
  },
  "oklch": {
    "l": 0.36176,
    "c": 0.10194,
    "h": 258.6
  },
  "luminance": 0.04641
}

Semantic roles & 50–950 ramp

primary

#183C72

secondary

#A77D3E

accent

#A540E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #183C72

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

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