#151B7C#151B7C

#151B7C is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.3% C 0.158 H 269.7°. Best body text is #FFFFFF at 14.19:1 contrast (WCAG AA passes).

Color values

HEX	#151B7C
RGB	rgb(21, 27, 124)
HSL	hsl(237, 71%, 28%)
HSV	hsv(237, 83%, 49%)
CMYK	cmyk(83.1%, 78.2%, 0%, 51.4%)
CIE-LAB	lab(17.45, 34.50, -54.67)
CIE-LCH	lch(17.45, 64.65, 302.25°)
OKLab	oklab(30.29% -0.0008 -0.1584)
OKLCH	oklch(30.29% 0.158 269.7)
XYZ	xyz(4.3380, 2.3980, 19.2991)
Luminance	0.0240 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B7C #7C7615

analogous

#154E7C #151B7C #42157C

triadic

#151B7C #7C151B #1B7C15

tetradic

#151B7C #7C154E #7C7615 #157C42

square

#151B7C #7C154E #7C7615 #157C42

split-complementary

#151B7C #7C4215 #4E7C15

monochromatic

#04061A #0C1048 #151B7C #1E26B0 #303ADC

Accessibility & contrast

On white

14.19

#151B7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#151B7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B7C

14.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B7C	#FFFFFF	#000000	##FFFFFF
##151B7C	1.00	14.19	1.48	14.19
#FFFFFF	14.19	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307F

Deuteranopia (green-blind)

#00267A

Tritanopia (blue-blind)

#00384A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #151b7c;
/* rgb */ color: rgb(21, 27, 124);
/* oklch */ color: oklch(30.3% 0.158 269.7);

Tailwind

colors: {
  custom: {
    50: '#6859a3',
    500: '#151b7c',
    950: '#000000',
  },
}

SCSS

$custom: #151b7c;
$custom-light: #6859a3;
$custom-dark: #000000;

JSON

{
  "hex": "#151b7c",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 124
  },
  "hsl": {
    "h": 236.505,
    "s": 71.034,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30291,
    "c": 0.15837,
    "h": 269.7
  },
  "luminance": 0.02399
}

Semantic roles & 50–950 ramp

primary

#151B7C

secondary

#B1AA3C

accent

#E33AEE

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #151B7C

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

Preview Lab → · Contrast checker → · Palette generator →