#291B8A#291B8A

#291B8A is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.2% C 0.171 H 277.3°. Best body text is #FFFFFF at 12.98:1 contrast (WCAG AA passes).

Color values

HEX	#291B8A
RGB	rgb(41, 27, 138)
HSL	hsl(248, 67%, 32%)
HSV	hsv(248, 80%, 54%)
CMYK	cmyk(70.3%, 80.4%, 0%, 45.9%)
CIE-LAB	lab(20.40, 40.99, -58.60)
CIE-LCH	lch(20.40, 71.51, 304.97°)
OKLab	oklab(33.19% 0.0217 -0.1693)
OKLCH	oklch(33.19% 0.171 277.3)
XYZ	xyz(5.8923, 3.0897, 24.3257)
Luminance	0.0309 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#291B8A #7C8A1B

analogous

#1B448A #291B8A #611B8A

triadic

#291B8A #8A291B #1B8A29

tetradic

#291B8A #8A1B44 #7C8A1B #1B8A61

square

#291B8A #8A1B44 #7C8A1B #1B8A61

split-complementary

#291B8A #8A611B #448A1B

monochromatic

#0B0724 #1A1157 #291B8A #3825BD #5845DB

Accessibility & contrast

On white

12.98

#291B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#291B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #291B8A

12.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##291B8A	#FFFFFF	#000000	##FFFFFF
##291B8A	1.00	12.98	1.62	12.98
#FFFFFF	12.98	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368D

Deuteranopia (green-blind)

#002C88

Tritanopia (blue-blind)

#003D52

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #291b8a;
/* rgb */ color: rgb(41, 27, 138);
/* oklch */ color: oklch(33.2% 0.171 277.3);

Tailwind

colors: {
  custom: {
    50: '#725bad',
    500: '#291b8a',
    950: '#000000',
  },
}

SCSS

$custom: #291b8a;
$custom-light: #725bad;
$custom-dark: #000000;

JSON

{
  "hex": "#291b8a",
  "rgb": {
    "r": 41,
    "g": 27,
    "b": 138
  },
  "hsl": {
    "h": 247.568,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.33192,
    "c": 0.17072,
    "h": 277.3
  },
  "luminance": 0.0309
}

Semantic roles & 50–950 ramp

primary

#291B8A

secondary

#ADBC45

accent

#EA3ED4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #291B8A

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

Preview Lab → · Contrast checker → · Palette generator →