#151B64#151B64

#151B64 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.6% C 0.126 H 271.3°. Best body text is #FFFFFF at 15.30:1 contrast (WCAG AA passes).

Color values

HEX	#151B64
RGB	rgb(21, 27, 100)
HSL	hsl(235, 65%, 24%)
HSV	hsv(235, 79%, 39%)
CMYK	cmyk(79%, 73%, 0%, 60.8%)
CIE-LAB	lab(14.75, 25.48, -43.55)
CIE-LCH	lch(14.75, 50.45, 300.33°)
OKLab	oklab(27.56% 0.0028 -0.126)
OKLCH	oklch(27.56% 0.126 271.3)
XYZ	xyz(3.0007, 1.8631, 12.2556)
Luminance	0.0186 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B64 #645E15

analogous

#154264 #151B64 #361564

triadic

#151B64 #64151B #1B6415

tetradic

#151B64 #641542 #645E15 #156436

square

#151B64 #641542 #645E15 #156436

split-complementary

#151B64 #643615 #426415

monochromatic

#050719 #0A0D31 #151B64 #202997 #2A36C9

Accessibility & contrast

On white

15.30

#151B64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#151B64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B64

15.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B64	#FFFFFF	#000000	##FFFFFF
##151B64	1.00	15.30	1.37	15.30
#FFFFFF	15.30	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002966

Deuteranopia (green-blind)

#002163

Tritanopia (blue-blind)

#002F3D

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #151b64;
/* rgb */ color: rgb(21, 27, 100);
/* oklch */ color: oklch(27.6% 0.126 271.3);

Tailwind

colors: {
  custom: {
    50: '#615791',
    500: '#151b64',
    950: '#000000',
  },
}

SCSS

$custom: #151b64;
$custom-light: #615791;
$custom-dark: #000000;

JSON

{
  "hex": "#151b64",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 100
  },
  "hsl": {
    "h": 235.443,
    "s": 65.289,
    "l": 23.725
  },
  "oklch": {
    "l": 0.27555,
    "c": 0.12602,
    "h": 271.3
  },
  "luminance": 0.01863
}

Semantic roles & 50–950 ramp

primary

#151B64

secondary

#9B943A

accent

#DB40E8

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #151B64

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

Preview Lab → · Contrast checker → · Palette generator →