#151C4B#151C4B

#151C4B is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.2% C 0.087 H 272.2°. Best body text is #FFFFFF at 16.16:1 contrast (WCAG AA passes).

Color values

HEX	#151C4B
RGB	rgb(21, 28, 75)
HSL	hsl(232, 56%, 19%)
HSV	hsv(232, 72%, 29%)
CMYK	cmyk(72%, 62.7%, 0%, 70.6%)
CIE-LAB	lab(12.59, 14.65, -30.20)
CIE-LCH	lch(12.59, 33.57, 295.88°)
OKLab	oklab(25.22% 0.0034 -0.0869)
OKLCH	oklch(25.22% 0.087 272.2)
XYZ	xyz(1.9941, 1.4978, 6.8393)
Luminance	0.0150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.33

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C4B #4B4415

analogous

#15374B #151C4B #29154B

triadic

#151C4B #4B151C #1C4B15

tetradic

#151C4B #4B1537 #4B4415 #154B29

square

#151C4B #4B1537 #4B4415 #154B29

split-complementary

#151C4B #4B2915 #374B15

monochromatic

#070918 #080A1B #151C4B #222E7B #3040AB

Accessibility & contrast

On white

16.16

#151C4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#151C4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C4B

16.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C4B	#FFFFFF	#000000	##FFFFFF
##151C4B	1.00	16.16	1.30	16.16
#FFFFFF	16.16	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234D

Deuteranopia (green-blind)

#001E4A

Tritanopia (blue-blind)

#002730

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #151c4b;
/* rgb */ color: rgb(21, 28, 75);
/* oklch */ color: oklch(25.2% 0.087 272.2);

Tailwind

colors: {
  custom: {
    50: '#5a577e',
    500: '#151c4b',
    950: '#000000',
  },
}

SCSS

$custom: #151c4b;
$custom-light: #5a577e;
$custom-dark: #000000;

JSON

{
  "hex": "#151c4b",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 75
  },
  "hsl": {
    "h": 232.222,
    "s": 56.25,
    "l": 18.824
  },
  "oklch": {
    "l": 0.25219,
    "c": 0.08693,
    "h": 272.2
  },
  "luminance": 0.01498
}

Semantic roles & 50–950 ramp

primary

#151C4B

secondary

#837939

accent

#CC48E0

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #151C4B

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

Preview Lab → · Contrast checker → · Palette generator →