#183C76#183C76

#183C76 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.5% C 0.108 H 259.6°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#183C76
RGB	rgb(24, 60, 118)
HSL	hsl(217, 66%, 28%)
HSV	hsv(217, 80%, 46%)
CMYK	cmyk(79.7%, 49.2%, 0%, 53.7%)
CIE-LAB	lab(25.96, 9.69, -36.95)
CIE-LCH	lch(25.96, 38.20, 284.69°)
OKLab	oklab(36.48% -0.0194 -0.1061)
OKLCH	oklch(36.48% 0.108 259.6)
XYZ	xyz(5.2614, 4.7333, 17.7724)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C76 #765218

analogous

#186B76 #183C76 #231876

triadic

#183C76 #76183C #3C7618

tetradic

#183C76 #76186B #765218 #187623

square

#183C76 #76186B #765218 #187623

split-complementary

#183C76 #762318 #6B7618

monochromatic

#050D19 #0E2243 #183C76 #2256A9 #3371D5

Accessibility & contrast

On white

10.79

#183C76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#183C76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C76

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C76	#FFFFFF	#000000	##FFFFFF
##183C76	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C4278

Deuteranopia (green-blind)

#033975

Tritanopia (blue-blind)

#004A53

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183c76;
/* rgb */ color: rgb(24, 60, 118);
/* oklch */ color: oklch(36.5% 0.108 259.6);

Tailwind

colors: {
  custom: {
    50: '#64719e',
    500: '#183c76',
    950: '#000000',
  },
}

SCSS

$custom: #183c76;
$custom-light: #64719e;
$custom-dark: #000000;

JSON

{
  "hex": "#183c76",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 118
  },
  "hsl": {
    "h": 217.021,
    "s": 66.197,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36478,
    "c": 0.10785,
    "h": 259.6
  },
  "luminance": 0.04734
}

Semantic roles & 50–950 ramp

primary

#183C76

secondary

#AB823F

accent

#A83FE9

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #183C76

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

Preview Lab → · Contrast checker → · Palette generator →