#151C4E#151C4E

#151C4E is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.5% C 0.092 H 272.1°. Best body text is #FFFFFF at 16.06:1 contrast (WCAG AA passes).

Color values

HEX	#151C4E
RGB	rgb(21, 28, 78)
HSL	hsl(233, 58%, 19%)
HSV	hsv(233, 73%, 31%)
CMYK	cmyk(73.1%, 64.1%, 0%, 69.4%)
CIE-LAB	lab(12.86, 15.89, -31.84)
CIE-LCH	lch(12.86, 35.58, 296.53°)
OKLab	oklab(25.5% 0.0034 -0.0917)
OKLCH	oklch(25.5% 0.092 272.1)
XYZ	xyz(2.0992, 1.5398, 7.3928)
Luminance	0.0154 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C4E #4E4715

analogous

#15394E #151C4E #2B154E

triadic

#151C4E #4E151C #1C4E15

tetradic

#151C4E #4E1539 #4E4715 #154E2B

square

#151C4E #4E1539 #4E4715 #154E2B

split-complementary

#151C4E #4E2B15 #394E15

monochromatic

#060918 #080B1E #151C4E #222D7E #2F3FAE

Accessibility & contrast

On white

16.06

#151C4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#151C4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C4E

16.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C4E	#FFFFFF	#000000	##FFFFFF
##151C4E	1.00	16.06	1.31	16.06
#FFFFFF	16.06	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002450

Deuteranopia (green-blind)

#001F4D

Tritanopia (blue-blind)

#002831

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #151c4e;
/* rgb */ color: rgb(21, 28, 78);
/* oklch */ color: oklch(25.5% 0.092 272.1);

Tailwind

colors: {
  custom: {
    50: '#5b5780',
    500: '#151c4e',
    950: '#000000',
  },
}

SCSS

$custom: #151c4e;
$custom-light: #5b5780;
$custom-dark: #000000;

JSON

{
  "hex": "#151c4e",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 78
  },
  "hsl": {
    "h": 232.632,
    "s": 57.576,
    "l": 19.412
  },
  "oklch": {
    "l": 0.255,
    "c": 0.09173,
    "h": 272.1
  },
  "luminance": 0.0154
}

Semantic roles & 50–950 ramp

primary

#151C4E

secondary

#867C39

accent

#CE47E1

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #151C4E

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

Preview Lab → · Contrast checker → · Palette generator →