#153A8D#153A8D

#153A8D is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.8% C 0.144 H 263.1°. Best body text is #FFFFFF at 10.39:1 contrast (WCAG AA passes).

Color values

HEX	#153A8D
RGB	rgb(21, 58, 141)
HSL	hsl(222, 74%, 32%)
HSV	hsv(222, 85%, 55%)
CMYK	cmyk(85.1%, 58.9%, 0%, 44.7%)
CIE-LAB	lab(27.04, 20.29, -49.60)
CIE-LCH	lch(27.04, 53.59, 292.25°)
OKLab	oklab(37.83% -0.0173 -0.1434)
OKLCH	oklch(37.83% 0.144 263.1)
XYZ	xyz(6.6283, 5.1078, 25.8307)
Luminance	0.0511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153A8D #8D6815

analogous

#15768D #153A8D #2C158D

triadic

#153A8D #8D153A #3A8D15

tetradic

#153A8D #8D1576 #8D6815 #158D2C

square

#153A8D #8D1576 #8D6815 #158D2C

split-complementary

#153A8D #8D2C15 #768D15

monochromatic

#050E22 #0D2458 #153A8D #1D50C2 #3B6EE2

Accessibility & contrast

On white

10.39

#153A8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#153A8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153A8D

10.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153A8D	#FFFFFF	#000000	##FFFFFF
##153A8D	1.00	10.39	2.02	10.39
#FFFFFF	10.39	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004690

Deuteranopia (green-blind)

#003B8B

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #153a8d;
/* rgb */ color: rgb(21, 58, 141);
/* oklch */ color: oklch(37.8% 0.144 263.1);

Tailwind

colors: {
  custom: {
    50: '#6a6faf',
    500: '#153a8d',
    950: '#000000',
  },
}

SCSS

$custom: #153a8d;
$custom-light: #6a6faf;
$custom-dark: #000000;

JSON

{
  "hex": "#153a8d",
  "rgb": {
    "r": 21,
    "g": 58,
    "b": 141
  },
  "hsl": {
    "h": 221.5,
    "s": 74.074,
    "l": 31.765
  },
  "oklch": {
    "l": 0.37831,
    "c": 0.14441,
    "h": 263.1
  },
  "luminance": 0.05109
}

Semantic roles & 50–950 ramp

primary

#153A8D

secondary

#C1983D

accent

#B737F1

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #153A8D

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

Preview Lab → · Contrast checker → · Palette generator →