#291B8F#291B8F

#291B8F is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.8% C 0.177 H 276.6°. Best body text is #FFFFFF at 12.75:1 contrast (WCAG AA passes).

Color values

HEX	#291B8F
RGB	rgb(41, 27, 143)
HSL	hsl(247, 68%, 33%)
HSV	hsv(247, 81%, 56%)
CMYK	cmyk(71.3%, 81.1%, 0%, 43.9%)
CIE-LAB	lab(20.97, 42.59, -60.77)
CIE-LCH	lch(20.97, 74.21, 305.02°)
OKLab	oklab(33.76% 0.0204 -0.1756)
OKLCH	oklch(33.76% 0.177 276.6)
XYZ	xyz(6.2627, 3.2379, 26.2762)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#291B8F #818F1B

analogous

#1B478F #291B8F #631B8F

triadic

#291B8F #8F291B #1B8F29

tetradic

#291B8F #8F1B47 #818F1B #1B8F63

square

#291B8F #8F1B47 #818F1B #1B8F63

split-complementary

#291B8F #8F631B #478F1B

monochromatic

#0B0828 #1A115C #291B8F #3825C2 #5A48DC

Accessibility & contrast

On white

12.75

#291B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#291B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #291B8F

12.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##291B8F	#FFFFFF	#000000	##FFFFFF
##291B8F	1.00	12.75	1.65	12.75
#FFFFFF	12.75	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003792

Deuteranopia (green-blind)

#002D8D

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #291b8f;
/* rgb */ color: rgb(41, 27, 143);
/* oklch */ color: oklch(33.8% 0.177 276.6);

Tailwind

colors: {
  custom: {
    50: '#745bb1',
    500: '#291b8f',
    950: '#000000',
  },
}

SCSS

$custom: #291b8f;
$custom-light: #745bb1;
$custom-dark: #000000;

JSON

{
  "hex": "#291b8f",
  "rgb": {
    "r": 41,
    "g": 27,
    "b": 143
  },
  "hsl": {
    "h": 247.241,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.33759,
    "c": 0.17683,
    "h": 276.6
  },
  "luminance": 0.03238
}

Semantic roles & 50–950 ramp

primary

#291B8F

secondary

#B0BE48

accent

#EB3DD6

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #291B8F

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

Preview Lab → · Contrast checker → · Palette generator →