#151B61#151B61

#151B61 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.2% C 0.122 H 271.5°. Best body text is #FFFFFF at 15.43:1 contrast (WCAG AA passes).

Color values

HEX	#151B61
RGB	rgb(21, 27, 97)
HSL	hsl(235, 64%, 23%)
HSV	hsv(235, 78%, 38%)
CMYK	cmyk(78.4%, 72.2%, 0%, 62%)
CIE-LAB	lab(14.43, 24.30, -42.08)
CIE-LCH	lch(14.43, 48.59, 300.00°)
OKLab	oklab(27.23% 0.0032 -0.1217)
OKLCH	oklch(27.23% 0.122 271.5)
XYZ	xyz(2.8581, 1.8061, 11.5049)
Luminance	0.0181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B61 #615B15

analogous

#154161 #151B61 #351561

triadic

#151B61 #61151B #1B6115

tetradic

#151B61 #611541 #615B15 #156135

square

#151B61 #611541 #615B15 #156135

split-complementary

#151B61 #613515 #416115

monochromatic

#050719 #0A0D2F #151B61 #202993 #2B37C6

Accessibility & contrast

On white

15.43

#151B61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#151B61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B61

15.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B61	#FFFFFF	#000000	##FFFFFF
##151B61	1.00	15.43	1.36	15.43
#FFFFFF	15.43	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002863

Deuteranopia (green-blind)

#002160

Tritanopia (blue-blind)

#002E3B

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #151b61;
/* rgb */ color: rgb(21, 27, 97);
/* oklch */ color: oklch(27.2% 0.122 271.5);

Tailwind

colors: {
  custom: {
    50: '#60578f',
    500: '#151b61',
    950: '#000000',
  },
}

SCSS

$custom: #151b61;
$custom-light: #60578f;
$custom-dark: #000000;

JSON

{
  "hex": "#151b61",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 97
  },
  "hsl": {
    "h": 235.263,
    "s": 64.407,
    "l": 23.137
  },
  "oklch": {
    "l": 0.27229,
    "c": 0.12175,
    "h": 271.5
  },
  "luminance": 0.01806
}

Semantic roles & 50–950 ramp

primary

#151B61

secondary

#98913A

accent

#DA40E7

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #151B61

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

Preview Lab → · Contrast checker → · Palette generator →