#153F8A#153F8A

#153F8A is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.7% C 0.134 H 261.0°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#153F8A
RGB	rgb(21, 63, 138)
HSL	hsl(218, 74%, 31%)
HSV	hsv(218, 85%, 54%)
CMYK	cmyk(84.8%, 54.3%, 0%, 45.9%)
CIE-LAB	lab(28.24, 15.56, -45.79)
CIE-LCH	lch(28.24, 48.36, 288.76°)
OKLab	oklab(38.67% -0.0209 -0.1321)
OKLCH	oklch(38.67% 0.134 261)
XYZ	xyz(6.6725, 5.5486, 24.7591)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153F8A #8A6015

analogous

#15798A #153F8A #26158A

triadic

#153F8A #8A153F #3F8A15

tetradic

#153F8A #8A1579 #8A6015 #158A26

square

#153F8A #8A1579 #8A6015 #158A26

split-complementary

#153F8A #8A2615 #798A15

monochromatic

#050F20 #0D2755 #153F8A #1D57BF #3975E1

Accessibility & contrast

On white

9.95

#153F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#153F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153F8A

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153F8A	#FFFFFF	#000000	##FFFFFF
##153F8A	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05488D

Deuteranopia (green-blind)

#003E89

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #153f8a;
/* rgb */ color: rgb(21, 63, 138);
/* oklch */ color: oklch(38.7% 0.134 261.0);

Tailwind

colors: {
  custom: {
    50: '#6873ad',
    500: '#153f8a',
    950: '#000000',
  },
}

SCSS

$custom: #153f8a;
$custom-light: #6873ad;
$custom-dark: #000000;

JSON

{
  "hex": "#153f8a",
  "rgb": {
    "r": 21,
    "g": 63,
    "b": 138
  },
  "hsl": {
    "h": 218.462,
    "s": 73.585,
    "l": 31.176
  },
  "oklch": {
    "l": 0.38667,
    "c": 0.13372,
    "h": 261
  },
  "luminance": 0.05549
}

Semantic roles & 50–950 ramp

primary

#153F8A

secondary

#BE903D

accent

#AE38F0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #153F8A

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

Preview Lab → · Contrast checker → · Palette generator →