#151B45#151B45

#151B45 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.4% C 0.079 H 273.0°. Best body text is #FFFFFF at 16.48:1 contrast (WCAG AA passes).

Color values

HEX	#151B45
RGB	rgb(21, 27, 69)
HSL	hsl(233, 53%, 18%)
HSV	hsv(233, 70%, 27%)
CMYK	cmyk(69.6%, 60.9%, 0%, 72.9%)
CIE-LAB	lab(11.78, 12.93, -27.37)
CIE-LCH	lch(11.78, 30.27, 295.30°)
OKLab	oklab(24.44% 0.0042 -0.0785)
OKLCH	oklch(24.44% 0.079 273)
XYZ	xyz(1.7750, 1.3728, 5.8005)
Luminance	0.0137 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B45 #453F15

analogous

#153345 #151B45 #271545

triadic

#151B45 #45151B #1B4515

tetradic

#151B45 #451533 #453F15 #154527

square

#151B45 #451533 #453F15 #154527

split-complementary

#151B45 #452715 #334515

monochromatic

#070917 #070917 #151B45 #232D74 #3240A3

Accessibility & contrast

On white

16.48

#151B45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#151B45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B45

16.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B45	#FFFFFF	#000000	##FFFFFF
##151B45	1.00	16.48	1.27	16.48
#FFFFFF	16.48	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#022146

Deuteranopia (green-blind)

#001D44

Tritanopia (blue-blind)

#00252C

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #151b45;
/* rgb */ color: rgb(21, 27, 69);
/* oklch */ color: oklch(24.4% 0.079 273.0);

Tailwind

colors: {
  custom: {
    50: '#585779',
    500: '#151b45',
    950: '#000000',
  },
}

SCSS

$custom: #151b45;
$custom-light: #585779;
$custom-dark: #000000;

JSON

{
  "hex": "#151b45",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 69
  },
  "hsl": {
    "h": 232.5,
    "s": 53.333,
    "l": 17.647
  },
  "oklch": {
    "l": 0.24444,
    "c": 0.07865,
    "h": 273
  },
  "luminance": 0.01373
}

Semantic roles & 50–950 ramp

primary

#151B45

secondary

#7D7439

accent

#CB4BDD

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #151B45

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

Preview Lab → · Contrast checker → · Palette generator →