#151C3F#151C3F

#151C3F is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.2% C 0.067 H 272.0°. Best body text is #FFFFFF at 16.54:1 contrast (WCAG AA passes).

Color values

HEX	#151C3F
RGB	rgb(21, 28, 63)
HSL	hsl(230, 50%, 16%)
HSV	hsv(230, 67%, 25%)
CMYK	cmyk(66.7%, 55.6%, 0%, 75.3%)
CIE-LAB	lab(11.61, 9.70, -23.42)
CIE-LCH	lch(11.61, 25.35, 292.49°)
OKLab	oklab(24.17% 0.0023 -0.0669)
OKLCH	oklch(24.17% 0.067 272)
XYZ	xyz(1.6214, 1.3487, 4.8765)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C3F #3F3815

analogous

#15313F #151C3F #23153F

triadic

#151C3F #3F151C #1C3F15

tetradic

#151C3F #3F1531 #3F3815 #153F23

square

#151C3F #3F1531 #3F3815 #153F23

split-complementary

#151C3F #3F2315 #313F15

monochromatic

#080A17 #080A17 #151C3F #24306D #34459B

Accessibility & contrast

On white

16.54

#151C3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#151C3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C3F

16.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C3F	#FFFFFF	#000000	##FFFFFF
##151C3F	1.00	16.54	1.27	16.54
#FFFFFF	16.54	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A2140

Deuteranopia (green-blind)

#051D3E

Tritanopia (blue-blind)

#00242A

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #151c3f;
/* rgb */ color: rgb(21, 28, 63);
/* oklch */ color: oklch(24.2% 0.067 272.0);

Tailwind

colors: {
  custom: {
    50: '#575774',
    500: '#151c3f',
    950: '#000000',
  },
}

SCSS

$custom: #151c3f;
$custom-light: #575774;
$custom-dark: #000000;

JSON

{
  "hex": "#151c3f",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 63
  },
  "hsl": {
    "h": 230,
    "s": 50,
    "l": 16.471
  },
  "oklch": {
    "l": 0.24167,
    "c": 0.06695,
    "h": 272
  },
  "luminance": 0.01349
}

Semantic roles & 50–950 ramp

primary

#151C3F

secondary

#776C39

accent

#C24EDA

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #151C3F

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

Preview Lab → · Contrast checker → · Palette generator →