#151B5A#151B5A

#151B5A is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.5% C 0.112 H 272.0°. Best body text is #FFFFFF at 15.72:1 contrast (WCAG AA passes).

Color values

HEX	#151B5A
RGB	rgb(21, 27, 90)
HSL	hsl(235, 62%, 22%)
HSV	hsv(235, 77%, 35%)
CMYK	cmyk(76.7%, 70%, 0%, 64.7%)
CIE-LAB	lab(13.72, 21.52, -38.58)
CIE-LCH	lch(13.72, 44.17, 299.15°)
OKLab	oklab(26.49% 0.0038 -0.1115)
OKLCH	oklch(26.49% 0.112 272)
XYZ	xyz(2.5460, 1.6812, 9.8612)
Luminance	0.0168 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B5A #5A5415

analogous

#153E5A #151B5A #32155A

triadic

#151B5A #5A151B #1B5A15

tetradic

#151B5A #5A153E #5A5415 #155A32

square

#151B5A #5A153E #5A5415 #155A32

split-complementary

#151B5A #5A3215 #3E5A15

monochromatic

#060719 #090C28 #151B5A #212A8C #2C39BD

Accessibility & contrast

On white

15.72

#151B5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#151B5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B5A

15.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B5A	#FFFFFF	#000000	##FFFFFF
##151B5A	1.00	15.72	1.34	15.72
#FFFFFF	15.72	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265C

Deuteranopia (green-blind)

#002059

Tritanopia (blue-blind)

#002C37

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #151b5a;
/* rgb */ color: rgb(21, 27, 90);
/* oklch */ color: oklch(26.5% 0.112 272.0);

Tailwind

colors: {
  custom: {
    50: '#5e5789',
    500: '#151b5a',
    950: '#000000',
  },
}

SCSS

$custom: #151b5a;
$custom-light: #5e5789;
$custom-dark: #000000;

JSON

{
  "hex": "#151b5a",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 90
  },
  "hsl": {
    "h": 234.783,
    "s": 62.162,
    "l": 21.765
  },
  "oklch": {
    "l": 0.26486,
    "c": 0.11154,
    "h": 272
  },
  "luminance": 0.01681
}

Semantic roles & 50–950 ramp

primary

#151B5A

secondary

#928A39

accent

#D743E5

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #151B5A

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

Preview Lab → · Contrast checker → · Palette generator →