#151C3D#151C3D

#151C3D is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.0% C 0.064 H 271.8°. Best body text is #FFFFFF at 16.60:1 contrast (WCAG AA passes).

Color values

HEX	#151C3D
RGB	rgb(21, 28, 61)
HSL	hsl(230, 49%, 16%)
HSV	hsv(230, 66%, 24%)
CMYK	cmyk(65.6%, 54.1%, 0%, 76.1%)
CIE-LAB	lab(11.46, 8.88, -22.25)
CIE-LCH	lch(11.46, 23.95, 291.75°)
OKLab	oklab(24% 0.002 -0.0635)
OKLCH	oklch(24% 0.064 271.8)
XYZ	xyz(1.5665, 1.3267, 4.5875)
Luminance	0.0133 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C3D #3D3615

analogous

#15303D #151C3D #22153D

triadic

#151C3D #3D151C #1C3D15

tetradic

#151C3D #3D1530 #3D3615 #153D22

square

#151C3D #3D1530 #3D3615 #153D22

split-complementary

#151C3D #3D2215 #303D15

monochromatic

#080A17 #080A17 #151C3D #25316B #344698

Accessibility & contrast

On white

16.60

#151C3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#151C3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C3D

16.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C3D	#FFFFFF	#000000	##FFFFFF
##151C3D	1.00	16.60	1.27	16.60
#FFFFFF	16.60	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C203E

Deuteranopia (green-blind)

#071D3C

Tritanopia (blue-blind)

#012329

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #151c3d;
/* rgb */ color: rgb(21, 28, 61);
/* oklch */ color: oklch(24.0% 0.064 271.8);

Tailwind

colors: {
  custom: {
    50: '#575773',
    500: '#151c3d',
    950: '#000000',
  },
}

SCSS

$custom: #151c3d;
$custom-light: #575773;
$custom-dark: #000000;

JSON

{
  "hex": "#151c3d",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 61
  },
  "hsl": {
    "h": 229.5,
    "s": 48.78,
    "l": 16.078
  },
  "oklch": {
    "l": 0.24004,
    "c": 0.0635,
    "h": 271.8
  },
  "luminance": 0.01327
}

Semantic roles & 50–950 ramp

primary

#151C3D

secondary

#756A39

accent

#C04FD8

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #151C3D

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

Preview Lab → · Contrast checker → · Palette generator →