#183689#183689

#183689 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.143 H 264.9°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#183689
RGB	rgb(24, 54, 137)
HSL	hsl(224, 70%, 32%)
HSV	hsv(224, 82%, 54%)
CMYK	cmyk(82.5%, 60.6%, 0%, 46.3%)
CIE-LAB	lab(25.68, 21.73, -49.34)
CIE-LCH	lch(25.68, 53.92, 293.77°)
OKLab	oklab(36.73% -0.0128 -0.1426)
OKLCH	oklch(36.73% 0.143 264.9)
XYZ	xyz(6.2096, 4.6379, 24.2300)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183689 #896B18

analogous

#186F89 #183689 #331889

triadic

#183689 #891836 #368918

tetradic

#183689 #89186F #896B18 #188933

square

#183689 #89186F #896B18 #188933

split-complementary

#183689 #893318 #6F8918

monochromatic

#060D21 #0F2155 #183689 #214BBD #3E68DD

Accessibility & contrast

On white

10.89

#183689 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#183689 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183689

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183689	#FFFFFF	#000000	##FFFFFF
##183689	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)

#00428C

Deuteranopia (green-blind)

#003887

Tritanopia (blue-blind)

#004B5A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183689;
/* rgb */ color: rgb(24, 54, 137);
/* oklch */ color: oklch(36.7% 0.143 264.9);

Tailwind

colors: {
  custom: {
    50: '#6a6cac',
    500: '#183689',
    950: '#000000',
  },
}

SCSS

$custom: #183689;
$custom-light: #6a6cac;
$custom-dark: #000000;

JSON

{
  "hex": "#183689",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 137
  },
  "hsl": {
    "h": 224.071,
    "s": 70.186,
    "l": 31.569
  },
  "oklch": {
    "l": 0.36732,
    "c": 0.14319,
    "h": 264.9
  },
  "luminance": 0.04639
}

Semantic roles & 50–950 ramp

primary

#183689

secondary

#BD9C40

accent

#BE3BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #183689

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

Preview Lab → · Contrast checker → · Palette generator →