#153A81#153A81

#153A81 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.8% C 0.127 H 261.7°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX#153A81
RGBrgb(21, 58, 129)
HSLhsl(219, 72%, 29%)
HSVhsv(219, 84%, 51%)
CMYKcmyk(83.7%, 55%, 0%, 49.4%)
CIE-LABlab(26.07, 15.33, -43.72)
CIE-LCHlch(26.07, 46.33, 289.32°)
OKLaboklab(36.79% -0.0183 -0.1261)
OKLCHoklch(36.79% 0.127 261.7)
XYZxyz(5.7833, 4.7698, 21.3805)
Luminance0.0477 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#153A81 #815C15
analogous
#157081 #153A81 #261581
triadic
#153A81 #81153A #3A8115
tetradic
#153A81 #811570 #815C15 #158126
square
#153A81 #811570 #815C15 #158126
split-complementary
#153A81 #812615 #708115
monochromatic
#040C1A #0C224C #153A81 #1E52B6 #336DDE

Accessibility & contrast

On white

10.75
#153A81 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.95
#153A81 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153A81
10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##153A81#FFFFFF#000000##FFFFFF
##153A811.0010.751.9510.75
#FFFFFF10.751.0021.001.00
#0000001.9521.001.0021.00
##FFFFFF10.751.0021.001.00

Color blindness preview

Protanopia (red-blind)
#024384
Deuteranopia (green-blind)
#003980
Tritanopia (blue-blind)
#004B57
Achromatopsia (no color)
#3E3E3E

Design tokens & code

CSS
--color: #153a81;
/* rgb */ color: rgb(21, 58, 129);
/* oklch */ color: oklch(36.8% 0.127 261.7);
Tailwind
colors: {
  custom: {
    50: '#666fa6',
    500: '#153a81',
    950: '#000000',
  },
}
SCSS
$custom: #153a81;
$custom-light: #666fa6;
$custom-dark: #000000;
JSON
{
  "hex": "#153a81",
  "rgb": {
    "r": 21,
    "g": 58,
    "b": 129
  },
  "hsl": {
    "h": 219.444,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36792,
    "c": 0.12738,
    "h": 261.7
  },
  "luminance": 0.04771
}

Semantic roles & 50–950 ramp

primary
#153A81
secondary
#B68C3C
accent
#B039EF
background
#F6F6FA
surface
#EBECF4
border
#C6C7CE
text
#07070F
muted
#7A7A7F

Preview Lab

Preview with #153A81

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

Preview Lab → · Contrast checker → · Palette generator →

#153A81 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva