#153D81#153D81

#153D81 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.5% C 0.123 H 260.4°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#153D81
RGB	rgb(21, 61, 129)
HSL	hsl(218, 72%, 29%)
HSV	hsv(218, 84%, 51%)
CMYK	cmyk(83.7%, 52.7%, 0%, 49.4%)
CIE-LAB	lab(26.96, 13.22, -42.26)
CIE-LCH	lch(26.96, 44.28, 287.36°)
OKLab	oklab(37.48% -0.0206 -0.1217)
OKLCH	oklch(37.48% 0.123 260.4)
XYZ	xyz(5.9390, 5.0812, 21.4324)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153D81 #815915

analogous

#157381 #153D81 #231581

triadic

#153D81 #81153D #3D8115

tetradic

#153D81 #811573 #815915 #158123

square

#153D81 #811573 #815915 #158123

split-complementary

#153D81 #812315 #738115

monochromatic

#040C1A #0C244C #153D81 #1E56B6 #3372DE

Accessibility & contrast

On white

10.41

#153D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#153D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153D81

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153D81	#FFFFFF	#000000	##FFFFFF
##153D81	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104583

Deuteranopia (green-blind)

#003B80

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #153d81;
/* rgb */ color: rgb(21, 61, 129);
/* oklch */ color: oklch(37.5% 0.123 260.4);

Tailwind

colors: {
  custom: {
    50: '#6671a6',
    500: '#153d81',
    950: '#000000',
  },
}

SCSS

$custom: #153d81;
$custom-light: #6671a6;
$custom-dark: #000000;

JSON

{
  "hex": "#153d81",
  "rgb": {
    "r": 21,
    "g": 61,
    "b": 129
  },
  "hsl": {
    "h": 217.778,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37475,
    "c": 0.12346,
    "h": 260.4
  },
  "luminance": 0.05082
}

Semantic roles & 50–950 ramp

primary

#153D81

secondary

#B6893C

accent

#AB39EF

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #153D81

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

Preview Lab → · Contrast checker → · Palette generator →