#291B78#291B78

#291B78 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.2% C 0.148 H 280.3°. Best body text is #FFFFFF at 13.80:1 contrast (WCAG AA passes).

Color values

HEX	#291B78
RGB	rgb(41, 27, 120)
HSL	hsl(249, 63%, 29%)
HSV	hsv(249, 78%, 47%)
CMYK	cmyk(65.8%, 77.5%, 0%, 52.9%)
CIE-LAB	lab(18.41, 35.13, -50.48)
CIE-LCH	lch(18.41, 61.50, 304.84°)
OKLab	oklab(31.21% 0.0265 -0.1457)
OKLCH	oklch(31.21% 0.148 280.3)
XYZ	xyz(4.6955, 2.6110, 18.0222)
Luminance	0.0261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#291B78 #6A781B

analogous

#1B3C78 #291B78 #581B78

triadic

#291B78 #78291B #1B7829

tetradic

#291B78 #781B3C #6A781B #1B7858

square

#291B78 #781B3C #6A781B #1B7858

split-complementary

#291B78 #78581B #3C781B

monochromatic

#090619 #181046 #291B78 #3A26AA #523BD3

Accessibility & contrast

On white

13.80

#291B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#291B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #291B78

13.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##291B78	#FFFFFF	#000000	##FFFFFF
##291B78	1.00	13.80	1.52	13.80
#FFFFFF	13.80	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307B

Deuteranopia (green-blind)

#002976

Tritanopia (blue-blind)

#003548

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #291b78;
/* rgb */ color: rgb(41, 27, 120);
/* oklch */ color: oklch(31.2% 0.148 280.3);

Tailwind

colors: {
  custom: {
    50: '#6e59a0',
    500: '#291b78',
    950: '#000000',
  },
}

SCSS

$custom: #291b78;
$custom-light: #6e59a0;
$custom-dark: #000000;

JSON

{
  "hex": "#291b78",
  "rgb": {
    "r": 41,
    "g": 27,
    "b": 120
  },
  "hsl": {
    "h": 249.032,
    "s": 63.265,
    "l": 28.824
  },
  "oklch": {
    "l": 0.31207,
    "c": 0.14806,
    "h": 280.3
  },
  "luminance": 0.02611
}

Semantic roles & 50–950 ramp

primary

#291B78

secondary

#9CAC43

accent

#E641CD

background

#F7F5FA

surface

#EDE9F3

border

#C8C5CD

text

#08040F

muted

#7B797F

Preview Lab

Preview with #291B78

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

Preview Lab → · Contrast checker → · Palette generator →