#151B4D#151B4D

#151B4D is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.2% C 0.092 H 272.8°. Best body text is #FFFFFF at 16.21:1 contrast (WCAG AA passes).

Color values

HEX	#151B4D
RGB	rgb(21, 27, 77)
HSL	hsl(234, 57%, 19%)
HSV	hsv(234, 73%, 30%)
CMYK	cmyk(72.7%, 64.9%, 0%, 69.8%)
CIE-LAB	lab(12.47, 16.23, -31.78)
CIE-LCH	lch(12.47, 35.68, 297.06°)
OKLab	oklab(25.19% 0.0044 -0.0915)
OKLCH	oklch(25.19% 0.092 272.8)
XYZ	xyz(2.0403, 1.4789, 7.1977)
Luminance	0.0148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B4D #4D4715

analogous

#15374D #151B4D #2B154D

triadic

#151B4D #4D151B #1B4D15

tetradic

#151B4D #4D1537 #4D4715 #154D2B

square

#151B4D #4D1537 #4D4715 #154D2B

split-complementary

#151B4D #4D2B15 #374D15

monochromatic

#070818 #080A1D #151B4D #222C7D #2F3DAD

Accessibility & contrast

On white

16.21

#151B4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#151B4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B4D

16.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B4D	#FFFFFF	#000000	##FFFFFF
##151B4D	1.00	16.21	1.30	16.21
#FFFFFF	16.21	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234F

Deuteranopia (green-blind)

#001E4C

Tritanopia (blue-blind)

#002731

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #151b4d;
/* rgb */ color: rgb(21, 27, 77);
/* oklch */ color: oklch(25.2% 0.092 272.8);

Tailwind

colors: {
  custom: {
    50: '#5b577f',
    500: '#151b4d',
    950: '#000000',
  },
}

SCSS

$custom: #151b4d;
$custom-light: #5b577f;
$custom-dark: #000000;

JSON

{
  "hex": "#151b4d",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 77
  },
  "hsl": {
    "h": 233.571,
    "s": 57.143,
    "l": 19.216
  },
  "oklch": {
    "l": 0.25185,
    "c": 0.09162,
    "h": 272.8
  },
  "luminance": 0.01479
}

Semantic roles & 50–950 ramp

primary

#151B4D

secondary

#857D39

accent

#D047E0

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #151B4D

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

Preview Lab → · Contrast checker → · Palette generator →