#151C40#151C40

#151C40 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.3% C 0.069 H 272.1°. Best body text is #FFFFFF at 16.51:1 contrast (WCAG AA passes).

Color values

HEX	#151C40
RGB	rgb(21, 28, 64)
HSL	hsl(230, 51%, 17%)
HSV	hsv(230, 67%, 25%)
CMYK	cmyk(67.2%, 56.2%, 0%, 74.9%)
CIE-LAB	lab(11.69, 10.11, -24.00)
CIE-LCH	lch(11.69, 26.04, 292.84°)
OKLab	oklab(24.25% 0.0025 -0.0686)
OKLCH	oklch(24.25% 0.069 272.1)
XYZ	xyz(1.6496, 1.3600, 5.0251)
Luminance	0.0136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C40 #403915

analogous

#153240 #151C40 #241540

triadic

#151C40 #40151C #1C4015

tetradic

#151C40 #401532 #403915 #154024

square

#151C40 #401532 #403915 #154024

split-complementary

#151C40 #402415 #324015

monochromatic

#080A17 #080A17 #151C40 #24306E #33449C

Accessibility & contrast

On white

16.51

#151C40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#151C40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C40

16.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C40	#FFFFFF	#000000	##FFFFFF
##151C40	1.00	16.51	1.27	16.51
#FFFFFF	16.51	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#092141

Deuteranopia (green-blind)

#031D3F

Tritanopia (blue-blind)

#00242A

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #151c40;
/* rgb */ color: rgb(21, 28, 64);
/* oklch */ color: oklch(24.3% 0.069 272.1);

Tailwind

colors: {
  custom: {
    50: '#575775',
    500: '#151c40',
    950: '#000000',
  },
}

SCSS

$custom: #151c40;
$custom-light: #575775;
$custom-dark: #000000;

JSON

{
  "hex": "#151c40",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 64
  },
  "hsl": {
    "h": 230.233,
    "s": 50.588,
    "l": 16.667
  },
  "oklch": {
    "l": 0.2425,
    "c": 0.06866,
    "h": 272.1
  },
  "luminance": 0.0136
}

Semantic roles & 50–950 ramp

primary

#151C40

secondary

#786E39

accent

#C34EDA

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #151C40

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

Preview Lab → · Contrast checker → · Palette generator →