#151F81#151F81

#151F81 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.5% C 0.161 H 268.9°. Best body text is #FFFFFF at 13.59:1 contrast (WCAG AA passes).

Color values

HEX	#151F81
RGB	rgb(21, 31, 129)
HSL	hsl(234, 72%, 29%)
HSV	hsv(234, 84%, 51%)
CMYK	cmyk(83.7%, 76%, 0%, 49.4%)
CIE-LAB	lab(18.90, 33.86, -55.45)
CIE-LCH	lch(18.90, 64.97, 301.41°)
OKLab	oklab(31.49% -0.003 -0.1607)
OKLCH	oklch(31.49% 0.161 268.9)
XYZ	xyz(4.7603, 2.7238, 21.0395)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151F81 #817715

analogous

#155581 #151F81 #411581

triadic

#151F81 #81151F #1F8115

tetradic

#151F81 #811555 #817715 #158141

square

#151F81 #811555 #817715 #158141

split-complementary

#151F81 #814115 #558115

monochromatic

#04061A #0C124C #151F81 #1E2CB6 #3343DE

Accessibility & contrast

On white

13.59

#151F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#151F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151F81

13.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151F81	#FFFFFF	#000000	##FFFFFF
##151F81	1.00	13.59	1.54	13.59
#FFFFFF	13.59	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003384

Deuteranopia (green-blind)

#00297F

Tritanopia (blue-blind)

#003C4E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #151f81;
/* rgb */ color: rgb(21, 31, 129);
/* oklch */ color: oklch(31.5% 0.161 268.9);

Tailwind

colors: {
  custom: {
    50: '#695ba7',
    500: '#151f81',
    950: '#000000',
  },
}

SCSS

$custom: #151f81;
$custom-light: #695ba7;
$custom-dark: #000000;

JSON

{
  "hex": "#151f81",
  "rgb": {
    "r": 21,
    "g": 31,
    "b": 129
  },
  "hsl": {
    "h": 234.444,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.31494,
    "c": 0.1607,
    "h": 268.9
  },
  "luminance": 0.02724
}

Semantic roles & 50–950 ramp

primary

#151F81

secondary

#B6AB3C

accent

#DE39EF

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#070410

muted

#7A797F

Preview Lab

Preview with #151F81

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

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