#151B48#151B48

#151B48 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.7% C 0.084 H 273.0°. Best body text is #FFFFFF at 16.38:1 contrast (WCAG AA passes).

Color values

HEX	#151B48
RGB	rgb(21, 27, 72)
HSL	hsl(233, 55%, 18%)
HSV	hsv(233, 71%, 28%)
CMYK	cmyk(70.8%, 62.5%, 0%, 71.8%)
CIE-LAB	lab(12.03, 14.17, -29.04)
CIE-LCH	lch(12.03, 32.31, 296.01°)
OKLab	oklab(24.72% 0.0043 -0.0835)
OKLCH	oklch(24.72% 0.084 273)
XYZ	xyz(1.8705, 1.4110, 6.3034)
Luminance	0.0141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B48 #484215

analogous

#153448 #151B48 #281548

triadic

#151B48 #48151B #1B4815

tetradic

#151B48 #481534 #484215 #154828

square

#151B48 #481534 #484215 #154828

split-complementary

#151B48 #482815 #344815

monochromatic

#070918 #070919 #151B48 #232D77 #313FA7

Accessibility & contrast

On white

16.38

#151B48 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#151B48 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B48

16.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B48	#FFFFFF	#000000	##FFFFFF
##151B48	1.00	16.38	1.28	16.38
#FFFFFF	16.38	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00224A

Deuteranopia (green-blind)

#001D47

Tritanopia (blue-blind)

#00262E

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #151b48;
/* rgb */ color: rgb(21, 27, 72);
/* oklch */ color: oklch(24.7% 0.084 273.0);

Tailwind

colors: {
  custom: {
    50: '#59577b',
    500: '#151b48',
    950: '#000000',
  },
}

SCSS

$custom: #151b48;
$custom-light: #59577b;
$custom-dark: #000000;

JSON

{
  "hex": "#151b48",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 72
  },
  "hsl": {
    "h": 232.941,
    "s": 54.839,
    "l": 18.235
  },
  "oklch": {
    "l": 0.24716,
    "c": 0.08357,
    "h": 273
  },
  "luminance": 0.01411
}

Semantic roles & 50–950 ramp

primary

#151B48

secondary

#807839

accent

#CD4ADE

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #151B48

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

Preview Lab → · Contrast checker → · Palette generator →