#10204B#10204B

#10204B is a dark, moderate blue. Relative luminance 0.017; OKLCH L 25.8% C 0.083 H 265.5°. Best body text is #FFFFFF at 15.79:1 contrast (WCAG AA passes).

Color values

HEX#10204B
RGBrgb(16, 32, 75)
HSLhsl(224, 65%, 18%)
HSVhsv(224, 79%, 29%)
CMYKcmyk(78.7%, 57.3%, 0%, 70.6%)
CIE-LABlab(13.54, 10.72, -28.69)
CIE-LCHlch(13.54, 30.63, 290.48°)
OKLaboklab(25.85% -0.0064 -0.0825)
OKLCHoklch(25.85% 0.083 265.5)
XYZxyz(1.9998, 1.6510, 6.8685)
Luminance0.0165 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#10204B #4B3B10
analogous
#103D4B #10204B #1D104B
triadic
#10204B #4B1020 #204B10
tetradic
#10204B #4B103D #4B3B10 #104B1D
square
#10204B #4B103D #4B3B10 #104B1D
split-complementary
#10204B #4B1D10 #3D4B10
monochromatic
#050B19 #050B19 #10204B #1B367D #264BB0

Accessibility & contrast

On white

15.79
#10204B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.33
#10204B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10204B
15.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##10204B#FFFFFF#000000##FFFFFF
##10204B1.0015.791.3315.79
#FFFFFF15.791.0021.001.00
#0000001.3321.001.0021.00
##FFFFFF15.791.0021.001.00

Color blindness preview

Protanopia (red-blind)
#05254D
Deuteranopia (green-blind)
#00204A
Tritanopia (blue-blind)
#002A32
Achromatopsia (no color)
#232323

Design tokens & code

CSS
--color: #10204b;
/* rgb */ color: rgb(16, 32, 75);
/* oklch */ color: oklch(25.8% 0.083 265.5);
Tailwind
colors: {
  custom: {
    50: '#575a7e',
    500: '#10204b',
    950: '#000000',
  },
}
SCSS
$custom: #10204b;
$custom-light: #575a7e;
$custom-dark: #000000;
JSON
{
  "hex": "#10204b",
  "rgb": {
    "r": 16,
    "g": 32,
    "b": 75
  },
  "hsl": {
    "h": 223.729,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.25847,
    "c": 0.08273,
    "h": 265.5
  },
  "luminance": 0.01651
}

Semantic roles & 50–950 ramp

primary
#10204B
secondary
#856E32
accent
#BA40E8
background
#F5F5F7
surface
#E9E9EE
border
#C5C5C9
text
#04040A
muted
#79797C

Preview Lab

Preview with #10204B

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

Preview Lab → · Contrast checker → · Palette generator →

#10204B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva