#151D40#151D40

#151D40 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.5% C 0.067 H 271.0°. Best body text is #FFFFFF at 16.39:1 contrast (WCAG AA passes).

Color values

HEX	#151D40
RGB	rgb(21, 29, 64)
HSL	hsl(229, 51%, 17%)
HSV	hsv(229, 67%, 25%)
CMYK	cmyk(67.2%, 54.7%, 0%, 74.9%)
CIE-LAB	lab(12.01, 9.34, -23.48)
CIE-LCH	lch(12.01, 25.27, 291.69°)
OKLab	oklab(24.5% 0.0012 -0.0671)
OKLCH	oklch(24.5% 0.067 271)
XYZ	xyz(1.6737, 1.4082, 5.0331)
Luminance	0.0141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151D40 #403815

analogous

#153340 #151D40 #231540

triadic

#151D40 #40151D #1D4015

tetradic

#151D40 #401533 #403815 #154023

square

#151D40 #401533 #403815 #154023

split-complementary

#151D40 #402315 #334015

monochromatic

#080A17 #080A17 #151D40 #24326E #33479C

Accessibility & contrast

On white

16.39

#151D40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#151D40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151D40

16.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151D40	#FFFFFF	#000000	##FFFFFF
##151D40	1.00	16.39	1.28	16.39
#FFFFFF	16.39	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C2241

Deuteranopia (green-blind)

#051E3F

Tritanopia (blue-blind)

#00252B

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #151d40;
/* rgb */ color: rgb(21, 29, 64);
/* oklch */ color: oklch(24.5% 0.067 271.0);

Tailwind

colors: {
  custom: {
    50: '#575875',
    500: '#151d40',
    950: '#000000',
  },
}

SCSS

$custom: #151d40;
$custom-light: #575875;
$custom-dark: #000000;

JSON

{
  "hex": "#151d40",
  "rgb": {
    "r": 21,
    "g": 29,
    "b": 64
  },
  "hsl": {
    "h": 228.837,
    "s": 50.588,
    "l": 16.667
  },
  "oklch": {
    "l": 0.24495,
    "c": 0.06709,
    "h": 271
  },
  "luminance": 0.01408
}

Semantic roles & 50–950 ramp

primary

#151D40

secondary

#786C39

accent

#C04EDA

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #151D40

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

Preview Lab → · Contrast checker → · Palette generator →