#291B81#291B81

#291B81 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.160 H 278.7°. Best body text is #FFFFFF at 13.39:1 contrast (WCAG AA passes).

Color values

HEX	#291B81
RGB	rgb(41, 27, 129)
HSL	hsl(248, 65%, 31%)
HSV	hsv(248, 79%, 51%)
CMYK	cmyk(68.2%, 79.1%, 0%, 49.4%)
CIE-LAB	lab(19.39, 38.09, -54.60)
CIE-LCH	lch(19.39, 66.57, 304.90°)
OKLab	oklab(32.19% 0.0242 -0.1577)
OKLCH	oklch(32.19% 0.16 278.7)
XYZ	xyz(5.2676, 2.8398, 21.0352)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#291B81 #73811B

analogous

#1B4081 #291B81 #5C1B81

triadic

#291B81 #81291B #1B8129

tetradic

#291B81 #811B40 #73811B #1B815C

square

#291B81 #811B40 #73811B #1B815C

split-complementary

#291B81 #815C1B #40811B

monochromatic

#09061C #19104E #291B81 #3926B4 #543FD7

Accessibility & contrast

On white

13.39

#291B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#291B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #291B81

13.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##291B81	#FFFFFF	#000000	##FFFFFF
##291B81	1.00	13.39	1.57	13.39
#FFFFFF	13.39	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003384

Deuteranopia (green-blind)

#002B7F

Tritanopia (blue-blind)

#00394D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #291b81;
/* rgb */ color: rgb(41, 27, 129);
/* oklch */ color: oklch(32.2% 0.160 278.7);

Tailwind

colors: {
  custom: {
    50: '#705aa7',
    500: '#291b81',
    950: '#000000',
  },
}

SCSS

$custom: #291b81;
$custom-light: #705aa7;
$custom-dark: #000000;

JSON

{
  "hex": "#291b81",
  "rgb": {
    "r": 41,
    "g": 27,
    "b": 129
  },
  "hsl": {
    "h": 248.235,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.32187,
    "c": 0.15953,
    "h": 278.7
  },
  "luminance": 0.0284
}

Semantic roles & 50–950 ramp

primary

#291B81

secondary

#A5B543

accent

#E83FD1

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #291B81

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

Preview Lab → · Contrast checker → · Palette generator →