#183D76#183D76

#183D76 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.7% C 0.107 H 259.0°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#183D76
RGB	rgb(24, 61, 118)
HSL	hsl(216, 66%, 28%)
HSV	hsv(216, 80%, 46%)
CMYK	cmyk(79.7%, 48.3%, 0%, 53.7%)
CIE-LAB	lab(26.27, 8.99, -36.46)
CIE-LCH	lch(26.27, 37.55, 283.85°)
OKLab	oklab(36.72% -0.0204 -0.1046)
OKLCH	oklch(36.72% 0.107 259)
XYZ	xyz(5.3143, 4.8391, 17.7900)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D76 #765118

analogous

#186C76 #183D76 #221876

triadic

#183D76 #76183D #3D7618

tetradic

#183D76 #76186C #765118 #187622

square

#183D76 #76186C #765118 #187622

split-complementary

#183D76 #762218 #6C7618

monochromatic

#050D19 #0E2343 #183D76 #2257A9 #3373D5

Accessibility & contrast

On white

10.67

#183D76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#183D76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D76

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D76	#FFFFFF	#000000	##FFFFFF
##183D76	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4378

Deuteranopia (green-blind)

#073A75

Tritanopia (blue-blind)

#004B53

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #183d76;
/* rgb */ color: rgb(24, 61, 118);
/* oklch */ color: oklch(36.7% 0.107 259.0);

Tailwind

colors: {
  custom: {
    50: '#64729e',
    500: '#183d76',
    950: '#000000',
  },
}

SCSS

$custom: #183d76;
$custom-light: #64729e;
$custom-dark: #000000;

JSON

{
  "hex": "#183d76",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 118
  },
  "hsl": {
    "h": 216.383,
    "s": 66.197,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36717,
    "c": 0.10656,
    "h": 259
  },
  "luminance": 0.0484
}

Semantic roles & 50–950 ramp

primary

#183D76

secondary

#AB803F

accent

#A63FE9

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #183D76

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

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