#153B81#153B81

#153B81 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.0% C 0.126 H 261.3°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#153B81
RGB	rgb(21, 59, 129)
HSL	hsl(219, 72%, 29%)
HSV	hsv(219, 84%, 51%)
CMYK	cmyk(83.7%, 54.3%, 0%, 49.4%)
CIE-LAB	lab(26.37, 14.62, -43.23)
CIE-LCH	lch(26.37, 45.64, 288.69°)
OKLab	oklab(37.02% -0.0191 -0.1246)
OKLCH	oklch(37.02% 0.126 261.3)
XYZ	xyz(5.8342, 4.8716, 21.3974)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B81 #815B15

analogous

#157181 #153B81 #251581

triadic

#153B81 #81153B #3B8115

tetradic

#153B81 #811571 #815B15 #158125

square

#153B81 #811571 #815B15 #158125

split-complementary

#153B81 #812515 #718115

monochromatic

#040C1A #0C234C #153B81 #1E53B6 #336FDE

Accessibility & contrast

On white

10.64

#153B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#153B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B81

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B81	#FFFFFF	#000000	##FFFFFF
##153B81	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#074483

Deuteranopia (green-blind)

#003A80

Tritanopia (blue-blind)

#004C58

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #153b81;
/* rgb */ color: rgb(21, 59, 129);
/* oklch */ color: oklch(37.0% 0.126 261.3);

Tailwind

colors: {
  custom: {
    50: '#6670a6',
    500: '#153b81',
    950: '#000000',
  },
}

SCSS

$custom: #153b81;
$custom-light: #6670a6;
$custom-dark: #000000;

JSON

{
  "hex": "#153b81",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 129
  },
  "hsl": {
    "h": 218.889,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37018,
    "c": 0.12608,
    "h": 261.3
  },
  "luminance": 0.04872
}

Semantic roles & 50–950 ramp

primary

#153B81

secondary

#B68B3C

accent

#AF39EF

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #153B81

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

Preview Lab → · Contrast checker → · Palette generator →