#151B79#151B79

#151B79 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.9% C 0.154 H 269.9°. Best body text is #FFFFFF at 14.34:1 contrast (WCAG AA passes).

Color values

HEX	#151B79
RGB	rgb(21, 27, 121)
HSL	hsl(236, 70%, 28%)
HSV	hsv(236, 83%, 47%)
CMYK	cmyk(82.6%, 77.7%, 0%, 52.5%)
CIE-LAB	lab(17.10, 33.41, -53.33)
CIE-LCH	lch(17.10, 62.93, 302.06°)
OKLab	oklab(29.94% -0.0003 -0.1545)
OKLCH	oklch(29.94% 0.154 269.9)
XYZ	xyz(4.1512, 2.3233, 18.3151)
Luminance	0.0232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B79 #797315

analogous

#154D79 #151B79 #411579

triadic

#151B79 #79151B #1B7915

tetradic

#151B79 #79154D #797315 #157941

square

#151B79 #79154D #797315 #157941

split-complementary

#151B79 #794115 #4D7915

monochromatic

#05061A #0C0F45 #151B79 #1E27AD #2E38DB

Accessibility & contrast

On white

14.34

#151B79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#151B79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B79

14.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B79	#FFFFFF	#000000	##FFFFFF
##151B79	1.00	14.34	1.46	14.34
#FFFFFF	14.34	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7C

Deuteranopia (green-blind)

#002577

Tritanopia (blue-blind)

#003749

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #151b79;
/* rgb */ color: rgb(21, 27, 121);
/* oklch */ color: oklch(29.9% 0.154 269.9);

Tailwind

colors: {
  custom: {
    50: '#6758a1',
    500: '#151b79',
    950: '#000000',
  },
}

SCSS

$custom: #151b79;
$custom-light: #6758a1;
$custom-dark: #000000;

JSON

{
  "hex": "#151b79",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 121
  },
  "hsl": {
    "h": 236.4,
    "s": 70.423,
    "l": 27.843
  },
  "oklch": {
    "l": 0.29938,
    "c": 0.15449,
    "h": 269.9
  },
  "luminance": 0.02324
}

Semantic roles & 50–950 ramp

primary

#151B79

secondary

#AFA83B

accent

#E23BED

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #151B79

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

Preview Lab → · Contrast checker → · Palette generator →