#183685#183685

#183685 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.4% C 0.138 H 264.6°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#183685
RGB	rgb(24, 54, 133)
HSL	hsl(223, 69%, 31%)
HSV	hsv(223, 82%, 52%)
CMYK	cmyk(82%, 59.4%, 0%, 47.8%)
CIE-LAB	lab(25.34, 20.11, -47.40)
CIE-LCH	lch(25.34, 51.49, 292.99°)
OKLab	oklab(36.37% -0.013 -0.1369)
OKLCH	oklch(36.37% 0.138 264.6)
XYZ	xyz(5.9280, 4.5253, 22.7468)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183685 #856718

analogous

#186C85 #183685 #301885

triadic

#183685 #851836 #368518

tetradic

#183685 #85186C #856718 #188530

square

#183685 #85186C #856718 #188530

split-complementary

#183685 #853018 #6C8518

monochromatic

#050C1D #0F2151 #183685 #214BB9 #3C68DC

Accessibility & contrast

On white

11.02

#183685 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#183685 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183685

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183685	#FFFFFF	#000000	##FFFFFF
##183685	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004188

Deuteranopia (green-blind)

#003783

Tritanopia (blue-blind)

#004A58

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #183685;
/* rgb */ color: rgb(24, 54, 133);
/* oklch */ color: oklch(36.4% 0.138 264.6);

Tailwind

colors: {
  custom: {
    50: '#686ca9',
    500: '#183685',
    950: '#000000',
  },
}

SCSS

$custom: #183685;
$custom-light: #686ca9;
$custom-dark: #000000;

JSON

{
  "hex": "#183685",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 133
  },
  "hsl": {
    "h": 223.486,
    "s": 69.427,
    "l": 30.784
  },
  "oklch": {
    "l": 0.3637,
    "c": 0.13754,
    "h": 264.6
  },
  "luminance": 0.04526
}

Semantic roles & 50–950 ramp

primary

#183685

secondary

#B99840

accent

#BC3CEC

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #183685

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

Preview Lab → · Contrast checker → · Palette generator →