#153A7E#153A7E

#153A7E is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.5% C 0.123 H 261.3°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#153A7E
RGB	rgb(21, 58, 126)
HSL	hsl(219, 71%, 29%)
HSV	hsv(219, 83%, 49%)
CMYK	cmyk(83.3%, 54%, 0%, 50.6%)
CIE-LAB	lab(25.84, 14.08, -42.21)
CIE-LCH	lch(25.84, 44.50, 288.45°)
OKLab	oklab(36.54% -0.0187 -0.1216)
OKLCH	oklch(36.54% 0.123 261.3)
XYZ	xyz(5.5868, 4.6912, 20.3457)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153A7E #7E5915

analogous

#156F7E #153A7E #25157E

triadic

#153A7E #7E153A #3A7E15

tetradic

#153A7E #7E156F #7E5915 #157E25

square

#153A7E #7E156F #7E5915 #157E25

split-complementary

#153A7E #7E2515 #6F7E15

monochromatic

#040C1A #0C224A #153A7E #1E52B2 #316DDD

Accessibility & contrast

On white

10.83

#153A7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#153A7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153A7E

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153A7E	#FFFFFF	#000000	##FFFFFF
##153A7E	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A4280

Deuteranopia (green-blind)

#00397D

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #153a7e;
/* rgb */ color: rgb(21, 58, 126);
/* oklch */ color: oklch(36.5% 0.123 261.3);

Tailwind

colors: {
  custom: {
    50: '#656fa4',
    500: '#153a7e',
    950: '#000000',
  },
}

SCSS

$custom: #153a7e;
$custom-light: #656fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#153a7e",
  "rgb": {
    "r": 21,
    "g": 58,
    "b": 126
  },
  "hsl": {
    "h": 218.857,
    "s": 71.429,
    "l": 28.824
  },
  "oklch": {
    "l": 0.36541,
    "c": 0.12305,
    "h": 261.3
  },
  "luminance": 0.04692
}

Semantic roles & 50–950 ramp

primary

#153A7E

secondary

#B3893C

accent

#AF3AEE

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #153A7E

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

Preview Lab → · Contrast checker → · Palette generator →