#183080#183080

#183080 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.138 H 266.2°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#183080
RGB	rgb(24, 48, 128)
HSL	hsl(226, 68%, 30%)
HSV	hsv(226, 81%, 50%)
CMYK	cmyk(81.3%, 62.5%, 0%, 49.8%)
CIE-LAB	lab(23.22, 22.30, -47.71)
CIE-LCH	lch(23.22, 52.67, 295.05°)
OKLab	oklab(34.66% -0.0091 -0.1379)
OKLCH	oklch(34.66% 0.138 266.2)
XYZ	xyz(5.3286, 3.8660, 20.8833)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183080 #806818

analogous

#186480 #183080 #341880

triadic

#183080 #801830 #308018

tetradic

#183080 #801864 #806818 #188034

square

#183080 #801864 #806818 #188034

split-complementary

#183080 #803418 #648018

monochromatic

#050A1A #0E1D4C #183080 #2243B4 #395EDA

Accessibility & contrast

On white

11.84

#183080 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#183080 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183080

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183080	#FFFFFF	#000000	##FFFFFF
##183080	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C83

Deuteranopia (green-blind)

#00337E

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183080;
/* rgb */ color: rgb(24, 48, 128);
/* oklch */ color: oklch(34.7% 0.138 266.2);

Tailwind

colors: {
  custom: {
    50: '#6868a6',
    500: '#183080',
    950: '#000000',
  },
}

SCSS

$custom: #183080;
$custom-light: #6868a6;
$custom-dark: #000000;

JSON

{
  "hex": "#183080",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 128
  },
  "hsl": {
    "h": 226.154,
    "s": 68.421,
    "l": 29.804
  },
  "oklch": {
    "l": 0.34655,
    "c": 0.13824,
    "h": 266.2
  },
  "luminance": 0.03867
}

Semantic roles & 50–950 ramp

primary

#183080

secondary

#B49940

accent

#C33DEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #183080

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

Preview Lab → · Contrast checker → · Palette generator →