#151D4A#151D4A

#151D4A is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.4% C 0.084 H 271.5°. Best body text is #FFFFFF at 16.07:1 contrast (WCAG AA passes).

Color values

HEX	#151D4A
RGB	rgb(21, 29, 74)
HSL	hsl(231, 56%, 19%)
HSV	hsv(231, 72%, 29%)
CMYK	cmyk(71.6%, 60.8%, 0%, 71%)
CIE-LAB	lab(12.81, 13.48, -29.16)
CIE-LCH	lch(12.81, 32.12, 294.81°)
OKLab	oklab(25.36% 0.0022 -0.0838)
OKLCH	oklch(25.36% 0.084 271.5)
XYZ	xyz(1.9842, 1.5324, 6.6685)
Luminance	0.0153 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.58

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151D4A #4A4215

analogous

#15374A #151D4A #27154A

triadic

#151D4A #4A151D #1D4A15

tetradic

#151D4A #4A1537 #4A4215 #154A27

square

#151D4A #4A1537 #4A4215 #154A27

split-complementary

#151D4A #4A2715 #374A15

monochromatic

#070918 #070A1A #151D4A #23307A #3042A9

Accessibility & contrast

On white

16.07

#151D4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#151D4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151D4A

16.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151D4A	#FFFFFF	#000000	##FFFFFF
##151D4A	1.00	16.07	1.31	16.07
#FFFFFF	16.07	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00244C

Deuteranopia (green-blind)

#001F49

Tritanopia (blue-blind)

#002830

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #151d4a;
/* rgb */ color: rgb(21, 29, 74);
/* oklch */ color: oklch(25.4% 0.084 271.5);

Tailwind

colors: {
  custom: {
    50: '#5a587d',
    500: '#151d4a',
    950: '#000000',
  },
}

SCSS

$custom: #151d4a;
$custom-light: #5a587d;
$custom-dark: #000000;

JSON

{
  "hex": "#151d4a",
  "rgb": {
    "r": 21,
    "g": 29,
    "b": 74
  },
  "hsl": {
    "h": 230.943,
    "s": 55.789,
    "l": 18.627
  },
  "oklch": {
    "l": 0.25355,
    "c": 0.08381,
    "h": 271.5
  },
  "luminance": 0.01533
}

Semantic roles & 50–950 ramp

primary

#151D4A

secondary

#827739

accent

#C849DF

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #151D4A

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

Preview Lab → · Contrast checker → · Palette generator →