#333591#333591

#333591 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.7% C 0.148 H 276.0°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#333591
RGB	rgb(51, 53, 145)
HSL	hsl(239, 48%, 38%)
HSV	hsv(239, 65%, 57%)
CMYK	cmyk(64.8%, 63.4%, 0%, 43.1%)
CIE-LAB	lab(27.56, 29.05, -51.17)
CIE-LCH	lch(27.56, 58.84, 299.59°)
OKLab	oklab(38.73% 0.0156 -0.1474)
OKLCH	oklch(38.73% 0.148 276)
XYZ	xyz(7.7475, 5.2937, 27.3961)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333591 #918F33

analogous

#336491 #333591 #603391

triadic

#333591 #913335 #359133

tetradic

#333591 #913364 #918F33 #339160

square

#333591 #913364 #918F33 #339160

split-complementary

#333591 #916033 #649133

monochromatic

#131436 #232464 #333591 #4447BD #7173CD

Accessibility & contrast

On white

10.20

#333591 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#333591 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333591

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333591	#FFFFFF	#000000	##FFFFFF
##333591	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004594

Deuteranopia (green-blind)

#003D8F

Tritanopia (blue-blind)

#004C5E

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #333591;
/* rgb */ color: rgb(51, 53, 145);
/* oklch */ color: oklch(38.7% 0.148 276.0);

Tailwind

colors: {
  custom: {
    50: '#766cb2',
    500: '#333591',
    950: '#000000',
  },
}

SCSS

$custom: #333591;
$custom-light: #766cb2;
$custom-dark: #000000;

JSON

{
  "hex": "#333591",
  "rgb": {
    "r": 51,
    "g": 53,
    "b": 145
  },
  "hsl": {
    "h": 238.723,
    "s": 47.959,
    "l": 38.431
  },
  "oklch": {
    "l": 0.3873,
    "c": 0.14819,
    "h": 276
  },
  "luminance": 0.05294
}

Semantic roles & 50–950 ramp

primary

#333591

secondary

#B5B46B

accent

#D550D8

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #333591

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

Preview Lab → · Contrast checker → · Palette generator →