#153B8D#153B8D

#153B8D is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.143 H 262.8°. Best body text is #FFFFFF at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#153B8D
RGB	rgb(21, 59, 141)
HSL	hsl(221, 74%, 32%)
HSV	hsv(221, 85%, 55%)
CMYK	cmyk(85.1%, 58.2%, 0%, 44.7%)
CIE-LAB	lab(27.32, 19.59, -49.14)
CIE-LCH	lch(27.32, 52.90, 291.74°)
OKLab	oklab(38.05% -0.0179 -0.142)
OKLCH	oklch(38.05% 0.143 262.8)
XYZ	xyz(6.6792, 5.2096, 25.8477)
Luminance	0.0521 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B8D #8D6715

analogous

#15778D #153B8D #2B158D

triadic

#153B8D #8D153B #3B8D15

tetradic

#153B8D #8D1577 #8D6715 #158D2B

square

#153B8D #8D1577 #8D6715 #158D2B

split-complementary

#153B8D #8D2B15 #778D15

monochromatic

#050E22 #0D2558 #153B8D #1D51C2 #3B70E2

Accessibility & contrast

On white

10.28

#153B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#153B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B8D

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B8D	#FFFFFF	#000000	##FFFFFF
##153B8D	1.00	10.28	2.04	10.28
#FFFFFF	10.28	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004690

Deuteranopia (green-blind)

#003B8B

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #153b8d;
/* rgb */ color: rgb(21, 59, 141);
/* oklch */ color: oklch(38.0% 0.143 262.8);

Tailwind

colors: {
  custom: {
    50: '#6a70af',
    500: '#153b8d',
    950: '#000000',
  },
}

SCSS

$custom: #153b8d;
$custom-light: #6a70af;
$custom-dark: #000000;

JSON

{
  "hex": "#153b8d",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 141
  },
  "hsl": {
    "h": 221,
    "s": 74.074,
    "l": 31.765
  },
  "oklch": {
    "l": 0.38045,
    "c": 0.14312,
    "h": 262.8
  },
  "luminance": 0.0521
}

Semantic roles & 50–950 ramp

primary

#153B8D

secondary

#C1973D

accent

#B637F1

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #153B8D

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

Preview Lab → · Contrast checker → · Palette generator →