#151C43#151C43

#151C43 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.5% C 0.074 H 272.2°. Best body text is #FFFFFF at 16.42:1 contrast (WCAG AA passes).

Color values

HEX	#151C43
RGB	rgb(21, 28, 67)
HSL	hsl(231, 52%, 17%)
HSV	hsv(231, 69%, 26%)
CMYK	cmyk(68.7%, 58.2%, 0%, 73.7%)
CIE-LAB	lab(11.92, 11.35, -25.73)
CIE-LCH	lch(11.92, 28.12, 293.80°)
OKLab	oklab(24.5% 0.0028 -0.0737)
OKLCH	oklch(24.5% 0.074 272.2)
XYZ	xyz(1.7373, 1.3950, 5.4868)
Luminance	0.0140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C43 #433C15

analogous

#153343 #151C43 #251543

triadic

#151C43 #43151C #1C4315

tetradic

#151C43 #431533 #433C15 #154325

square

#151C43 #431533 #433C15 #154325

split-complementary

#151C43 #432515 #334315

monochromatic

#070A17 #070A17 #151C43 #242F72 #3243A0

Accessibility & contrast

On white

16.42

#151C43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#151C43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C43

16.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C43	#FFFFFF	#000000	##FFFFFF
##151C43	1.00	16.42	1.28	16.42
#FFFFFF	16.42	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#062144

Deuteranopia (green-blind)

#001D42

Tritanopia (blue-blind)

#00252C

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #151c43;
/* rgb */ color: rgb(21, 28, 67);
/* oklch */ color: oklch(24.5% 0.074 272.2);

Tailwind

colors: {
  custom: {
    50: '#585777',
    500: '#151c43',
    950: '#000000',
  },
}

SCSS

$custom: #151c43;
$custom-light: #585777;
$custom-dark: #000000;

JSON

{
  "hex": "#151c43",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 67
  },
  "hsl": {
    "h": 230.87,
    "s": 52.273,
    "l": 17.255
  },
  "oklch": {
    "l": 0.24504,
    "c": 0.07375,
    "h": 272.2
  },
  "luminance": 0.01395
}

Semantic roles & 50–950 ramp

primary

#151C43

secondary

#7B7139

accent

#C64CDC

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030309

muted

#78787B

Preview Lab

Preview with #151C43

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

Preview Lab → · Contrast checker → · Palette generator →