#151B66#151B66

#151B66 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.8% C 0.129 H 271.1°. Best body text is #FFFFFF at 15.21:1 contrast (WCAG AA passes).

Color values

HEX	#151B66
RGB	rgb(21, 27, 102)
HSL	hsl(236, 66%, 24%)
HSV	hsv(236, 79%, 40%)
CMYK	cmyk(79.4%, 73.5%, 0%, 60%)
CIE-LAB	lab(14.97, 26.26, -44.51)
CIE-LCH	lch(14.97, 51.68, 300.53°)
OKLab	oklab(27.77% 0.0026 -0.1288)
OKLCH	oklch(27.77% 0.129 271.1)
XYZ	xyz(3.0987, 1.9023, 12.7717)
Luminance	0.0190 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B66 #666015

analogous

#154466 #151B66 #381566

triadic

#151B66 #66151B #1B6615

tetradic

#151B66 #661544 #666015 #156638

square

#151B66 #661544 #666015 #156638

split-complementary

#151B66 #663815 #446615

monochromatic

#050719 #0B0E33 #151B66 #1F2899 #2A36CC

Accessibility & contrast

On white

15.21

#151B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#151B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B66

15.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B66	#FFFFFF	#000000	##FFFFFF
##151B66	1.00	15.21	1.38	15.21
#FFFFFF	15.21	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002968

Deuteranopia (green-blind)

#002265

Tritanopia (blue-blind)

#00303E

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #151b66;
/* rgb */ color: rgb(21, 27, 102);
/* oklch */ color: oklch(27.8% 0.129 271.1);

Tailwind

colors: {
  custom: {
    50: '#615792',
    500: '#151b66',
    950: '#000000',
  },
}

SCSS

$custom: #151b66;
$custom-light: #615792;
$custom-dark: #000000;

JSON

{
  "hex": "#151b66",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 102
  },
  "hsl": {
    "h": 235.556,
    "s": 65.854,
    "l": 24.118
  },
  "oklch": {
    "l": 0.27774,
    "c": 0.12884,
    "h": 271.1
  },
  "luminance": 0.01903
}

Semantic roles & 50–950 ramp

primary

#151B66

secondary

#9D963A

accent

#DC3FE9

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #151B66

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

Preview Lab → · Contrast checker → · Palette generator →