#183E76#183E76

#183E76 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.105 H 258.3°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#183E76
RGB	rgb(24, 62, 118)
HSL	hsl(216, 66%, 28%)
HSV	hsv(216, 80%, 46%)
CMYK	cmyk(79.7%, 47.5%, 0%, 53.7%)
CIE-LAB	lab(26.58, 8.29, -35.96)
CIE-LCH	lch(26.58, 36.90, 282.98°)
OKLab	oklab(36.96% -0.0213 -0.1031)
OKLCH	oklch(36.96% 0.105 258.3)
XYZ	xyz(5.3681, 4.9468, 17.8079)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E76 #765018

analogous

#186D76 #183E76 #211876

triadic

#183E76 #76183E #3E7618

tetradic

#183E76 #76186D #765018 #187621

square

#183E76 #76186D #765018 #187621

split-complementary

#183E76 #762118 #6D7618

monochromatic

#050D19 #0E2343 #183E76 #2259A9 #3375D5

Accessibility & contrast

On white

10.56

#183E76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#183E76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E76

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E76	#FFFFFF	#000000	##FFFFFF
##183E76	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)

#214378

Deuteranopia (green-blind)

#0C3B75

Tritanopia (blue-blind)

#004B54

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183e76;
/* rgb */ color: rgb(24, 62, 118);
/* oklch */ color: oklch(37.0% 0.105 258.3);

Tailwind

colors: {
  custom: {
    50: '#64729e',
    500: '#183e76',
    950: '#000000',
  },
}

SCSS

$custom: #183e76;
$custom-light: #64729e;
$custom-dark: #000000;

JSON

{
  "hex": "#183e76",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 118
  },
  "hsl": {
    "h": 215.745,
    "s": 66.197,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36957,
    "c": 0.10527,
    "h": 258.3
  },
  "luminance": 0.04947
}

Semantic roles & 50–950 ramp

primary

#183E76

secondary

#AB7F3F

accent

#A43FE9

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #183E76

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

Preview Lab → · Contrast checker → · Palette generator →