#153B8C#153B8C

#153B8C is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.142 H 262.7°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#153B8C
RGB	rgb(21, 59, 140)
HSL	hsl(221, 74%, 32%)
HSV	hsv(221, 85%, 55%)
CMYK	cmyk(85%, 57.9%, 0%, 45.1%)
CIE-LAB	lab(27.24, 19.18, -48.66)
CIE-LCH	lch(27.24, 52.30, 291.51°)
OKLab	oklab(37.96% -0.018 -0.1406)
OKLCH	oklch(37.96% 0.142 262.7)
XYZ	xyz(6.6051, 5.1800, 25.4576)
Luminance	0.0518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B8C #8C6615

analogous

#15778C #153B8C #2A158C

triadic

#153B8C #8C153B #3B8C15

tetradic

#153B8C #8C1577 #8C6615 #158C2A

square

#153B8C #8C1577 #8C6615 #158C2A

split-complementary

#153B8C #8C2A15 #778C15

monochromatic

#050E22 #0D2557 #153B8C #1D51C1 #3A6FE1

Accessibility & contrast

On white

10.31

#153B8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#153B8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B8C

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B8C	#FFFFFF	#000000	##FFFFFF
##153B8C	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468F

Deuteranopia (green-blind)

#003B8A

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #153b8c;
/* rgb */ color: rgb(21, 59, 140);
/* oklch */ color: oklch(38.0% 0.142 262.7);

Tailwind

colors: {
  custom: {
    50: '#6970ae',
    500: '#153b8c',
    950: '#000000',
  },
}

SCSS

$custom: #153b8c;
$custom-light: #6970ae;
$custom-dark: #000000;

JSON

{
  "hex": "#153b8c",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 140
  },
  "hsl": {
    "h": 220.84,
    "s": 73.913,
    "l": 31.569
  },
  "oklch": {
    "l": 0.37957,
    "c": 0.14172,
    "h": 262.7
  },
  "luminance": 0.05181
}

Semantic roles & 50–950 ramp

primary

#153B8C

secondary

#C0963D

accent

#B537F1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #153B8C

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

Preview Lab → · Contrast checker → · Palette generator →