#291B79#291B79

#291B79 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.3% C 0.149 H 280.1°. Best body text is #FFFFFF at 13.75:1 contrast (WCAG AA passes).

Color values

HEX	#291B79
RGB	rgb(41, 27, 121)
HSL	hsl(249, 64%, 29%)
HSV	hsv(249, 78%, 47%)
CMYK	cmyk(66.1%, 77.7%, 0%, 52.5%)
CIE-LAB	lab(18.52, 35.46, -50.94)
CIE-LCH	lch(18.52, 62.07, 304.84°)
OKLab	oklab(31.32% 0.0263 -0.147)
OKLCH	oklch(31.32% 0.149 280.1)
XYZ	xyz(4.7565, 2.6354, 18.3435)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#291B79 #6B791B

analogous

#1B3C79 #291B79 #581B79

triadic

#291B79 #79291B #1B7929

tetradic

#291B79 #791B3C #6B791B #1B7958

square

#291B79 #791B3C #6B791B #1B7958

split-complementary

#291B79 #79581B #3C791B

monochromatic

#080619 #181047 #291B79 #3A26AB #523BD3

Accessibility & contrast

On white

13.75

#291B79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#291B79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #291B79

13.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##291B79	#FFFFFF	#000000	##FFFFFF
##291B79	1.00	13.75	1.53	13.75
#FFFFFF	13.75	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307C

Deuteranopia (green-blind)

#002977

Tritanopia (blue-blind)

#003649

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #291b79;
/* rgb */ color: rgb(41, 27, 121);
/* oklch */ color: oklch(31.3% 0.149 280.1);

Tailwind

colors: {
  custom: {
    50: '#6e59a1',
    500: '#291b79',
    950: '#000000',
  },
}

SCSS

$custom: #291b79;
$custom-light: #6e59a1;
$custom-dark: #000000;

JSON

{
  "hex": "#291b79",
  "rgb": {
    "r": 41,
    "g": 27,
    "b": 121
  },
  "hsl": {
    "h": 248.936,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.31315,
    "c": 0.14935,
    "h": 280.1
  },
  "luminance": 0.02636
}

Semantic roles & 50–950 ramp

primary

#291B79

secondary

#9DAD43

accent

#E741CE

background

#F7F5FA

surface

#EDE9F3

border

#C8C5CD

text

#08040F

muted

#7B797F

Preview Lab

Preview with #291B79

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

Preview Lab → · Contrast checker → · Palette generator →