#151F40#151F40

#151F40 is a very dark, moderate blue. Relative luminance 0.015; OKLCH L 25.0% C 0.064 H 268.8°. Best body text is #FFFFFF at 16.13:1 contrast (WCAG AA passes).

Color values

HEX	#151F40
RGB	rgb(21, 31, 64)
HSL	hsl(226, 51%, 17%)
HSV	hsv(226, 67%, 25%)
CMYK	cmyk(67.2%, 51.6%, 0%, 74.9%)
CIE-LAB	lab(12.67, 7.81, -22.43)
CIE-LCH	lch(12.67, 23.75, 289.20°)
OKLab	oklab(25% -0.0014 -0.064)
OKLCH	oklch(25% 0.064 268.8)
XYZ	xyz(1.7243, 1.5094, 5.0500)
Luminance	0.0151 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151F40 #403615

analogous

#153540 #151F40 #211540

triadic

#151F40 #40151F #1F4015

tetradic

#151F40 #401535 #403615 #154021

square

#151F40 #401535 #403615 #154021

split-complementary

#151F40 #402115 #354015

monochromatic

#080B17 #080B17 #151F40 #24356E #334C9C

Accessibility & contrast

On white

16.13

#151F40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#151F40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151F40

16.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151F40	#FFFFFF	#000000	##FFFFFF
##151F40	1.00	16.13	1.30	16.13
#FFFFFF	16.13	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#102341

Deuteranopia (green-blind)

#091F3F

Tritanopia (blue-blind)

#00262C

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #151f40;
/* rgb */ color: rgb(21, 31, 64);
/* oklch */ color: oklch(25.0% 0.064 268.8);

Tailwind

colors: {
  custom: {
    50: '#575a75',
    500: '#151f40',
    950: '#000000',
  },
}

SCSS

$custom: #151f40;
$custom-light: #575a75;
$custom-dark: #000000;

JSON

{
  "hex": "#151f40",
  "rgb": {
    "r": 21,
    "g": 31,
    "b": 64
  },
  "hsl": {
    "h": 226.047,
    "s": 50.588,
    "l": 16.667
  },
  "oklch": {
    "l": 0.24995,
    "c": 0.06397,
    "h": 268.8
  },
  "luminance": 0.0151
}

Semantic roles & 50–950 ramp

primary

#151F40

secondary

#786939

accent

#B94EDA

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #151F40

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

Preview Lab → · Contrast checker → · Palette generator →