#291F9B#291F9B

#291F9B is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.6% C 0.188 H 274.7°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#291F9B
RGB	rgb(41, 31, 155)
HSL	hsl(245, 67%, 36%)
HSV	hsv(245, 80%, 61%)
CMYK	cmyk(73.5%, 80%, 0%, 39.2%)
CIE-LAB	lab(23.06, 44.37, -64.73)
CIE-LCH	lch(23.06, 78.48, 304.43°)
OKLab	oklab(35.62% 0.0154 -0.1872)
OKLCH	oklch(35.62% 0.188 274.7)
XYZ	xyz(7.3189, 3.8172, 31.3551)
Luminance	0.0382 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#291F9B #919B1F

analogous

#1F539B #291F9B #671F9B

triadic

#291F9B #9B291F #1F9B29

tetradic

#291F9B #9B1F53 #919B1F #1F9B67

square

#291F9B #9B1F53 #919B1F #1F9B67

split-complementary

#291F9B #9B671F #539B1F

monochromatic

#0E0B35 #1C1568 #291F9B #3629CE #6257DD

Accessibility & contrast

On white

11.91

#291F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#291F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #291F9B

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##291F9B	#FFFFFF	#000000	##FFFFFF
##291F9B	1.00	11.91	1.76	11.91
#FFFFFF	11.91	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9E

Deuteranopia (green-blind)

#003199

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #291f9b;
/* rgb */ color: rgb(41, 31, 155);
/* oklch */ color: oklch(35.6% 0.188 274.7);

Tailwind

colors: {
  custom: {
    50: '#765eba',
    500: '#291f9b',
    950: '#000000',
  },
}

SCSS

$custom: #291f9b;
$custom-light: #765eba;
$custom-dark: #000000;

JSON

{
  "hex": "#291f9b",
  "rgb": {
    "r": 41,
    "g": 31,
    "b": 155
  },
  "hsl": {
    "h": 244.839,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.35617,
    "c": 0.18784,
    "h": 274.7
  },
  "luminance": 0.03818
}

Semantic roles & 50–950 ramp

primary

#291F9B

secondary

#B8C155

accent

#EA3EDC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #291F9B

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

Preview Lab → · Contrast checker → · Palette generator →