#153B81#153B81

#153B81 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.0% C 0.126 H 261.3°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX#153B81
RGBrgb(21, 59, 129)
HSLhsl(219, 72%, 29%)
HSVhsv(219, 84%, 51%)
CMYKcmyk(83.7%, 54.3%, 0%, 49.4%)
CIE-LABlab(26.37, 14.62, -43.23)
CIE-LCHlch(26.37, 45.64, 288.69°)
OKLaboklab(37.02% -0.0191 -0.1246)
OKLCHoklch(37.02% 0.126 261.3)
XYZxyz(5.8342, 4.8716, 21.3974)
Luminance0.0487 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#153B81 #815B15
analogous
#157181 #153B81 #251581
triadic
#153B81 #81153B #3B8115
tetradic
#153B81 #811571 #815B15 #158125
square
#153B81 #811571 #815B15 #158125
split-complementary
#153B81 #812515 #718115
monochromatic
#040C1A #0C234C #153B81 #1E53B6 #336FDE

Accessibility & contrast

On white

10.64
#153B81 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.97
#153B81 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B81
10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##153B81#FFFFFF#000000##FFFFFF
##153B811.0010.641.9710.64
#FFFFFF10.641.0021.001.00
#0000001.9721.001.0021.00
##FFFFFF10.641.0021.001.00

Color blindness preview

Protanopia (red-blind)
#074483
Deuteranopia (green-blind)
#003A80
Tritanopia (blue-blind)
#004C58
Achromatopsia (no color)
#3E3E3E

Design tokens & code

CSS
--color: #153b81;
/* rgb */ color: rgb(21, 59, 129);
/* oklch */ color: oklch(37.0% 0.126 261.3);
Tailwind
colors: {
  custom: {
    50: '#6670a6',
    500: '#153b81',
    950: '#000000',
  },
}
SCSS
$custom: #153b81;
$custom-light: #6670a6;
$custom-dark: #000000;
JSON
{
  "hex": "#153b81",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 129
  },
  "hsl": {
    "h": 218.889,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37018,
    "c": 0.12608,
    "h": 261.3
  },
  "luminance": 0.04872
}

Semantic roles & 50–950 ramp

primary
#153B81
secondary
#B68B3C
accent
#AF39EF
background
#F6F6FA
surface
#EBECF4
border
#C6C7CE
text
#07070F
muted
#7A7A7F

Preview Lab

Preview with #153B81

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

Preview Lab → · Contrast checker → · Palette generator →

#153B81 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva