#151D3F#151D3F

#151D3F is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.4% C 0.065 H 270.9°. Best body text is #FFFFFF at 16.41:1 contrast (WCAG AA passes).

Color values

HEX	#151D3F
RGB	rgb(21, 29, 63)
HSL	hsl(229, 50%, 16%)
HSV	hsv(229, 67%, 25%)
CMYK	cmyk(66.7%, 54%, 0%, 75.3%)
CIE-LAB	lab(11.94, 8.93, -22.90)
CIE-LCH	lch(11.94, 24.58, 291.30°)
OKLab	oklab(24.41% 0.001 -0.0654)
OKLCH	oklch(24.41% 0.065 270.9)
XYZ	xyz(1.6455, 1.3969, 4.8846)
Luminance	0.0140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151D3F #3F3715

analogous

#15323F #151D3F #22153F

triadic

#151D3F #3F151D #1D3F15

tetradic

#151D3F #3F1532 #3F3715 #153F22

square

#151D3F #3F1532 #3F3715 #153F22

split-complementary

#151D3F #3F2215 #323F15

monochromatic

#080B17 #080B17 #151D3F #24326D #34479B

Accessibility & contrast

On white

16.41

#151D3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#151D3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151D3F

16.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151D3F	#FFFFFF	#000000	##FFFFFF
##151D3F	1.00	16.41	1.28	16.41
#FFFFFF	16.41	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D2140

Deuteranopia (green-blind)

#071E3E

Tritanopia (blue-blind)

#00252A

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #151d3f;
/* rgb */ color: rgb(21, 29, 63);
/* oklch */ color: oklch(24.4% 0.065 270.9);

Tailwind

colors: {
  custom: {
    50: '#575874',
    500: '#151d3f',
    950: '#000000',
  },
}

SCSS

$custom: #151d3f;
$custom-light: #575874;
$custom-dark: #000000;

JSON

{
  "hex": "#151d3f",
  "rgb": {
    "r": 21,
    "g": 29,
    "b": 63
  },
  "hsl": {
    "h": 228.571,
    "s": 50,
    "l": 16.471
  },
  "oklch": {
    "l": 0.24414,
    "c": 0.06537,
    "h": 270.9
  },
  "luminance": 0.01397
}

Semantic roles & 50–950 ramp

primary

#151D3F

secondary

#776B39

accent

#BF4EDA

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #151D3F

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

Preview Lab → · Contrast checker → · Palette generator →