#321F9B#321F9B

#321F9B is a dark, vivid blue. Relative luminance 0.040; OKLCH L 36.3% C 0.186 H 278.7°. Best body text is #FFFFFF at 11.63:1 contrast (WCAG AA passes).

Color values

HEX	#321F9B
RGB	rgb(50, 31, 155)
HSL	hsl(249, 67%, 36%)
HSV	hsv(249, 80%, 61%)
CMYK	cmyk(67.7%, 80%, 0%, 39.2%)
CIE-LAB	lab(23.75, 45.20, -63.56)
CIE-LCH	lch(23.75, 77.99, 305.41°)
OKLab	oklab(36.28% 0.0281 -0.1836)
OKLCH	oklch(36.28% 0.186 278.7)
XYZ	xyz(7.7199, 4.0240, 31.3739)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#321F9B #889B1F

analogous

#1F4A9B #321F9B #701F9B

triadic

#321F9B #9B321F #1F9B32

tetradic

#321F9B #9B1F4A #889B1F #1F9B70

square

#321F9B #9B1F4A #889B1F #1F9B70

split-complementary

#321F9B #9B701F #4A9B1F

monochromatic

#110B35 #221568 #321F9B #4229CE #6C57DD

Accessibility & contrast

On white

11.63

#321F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#321F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #321F9B

11.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##321F9B	#FFFFFF	#000000	##FFFFFF
##321F9B	1.00	11.63	1.81	11.63
#FFFFFF	11.63	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D9E

Deuteranopia (green-blind)

#003399

Tritanopia (blue-blind)

#00445D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #321f9b;
/* rgb */ color: rgb(50, 31, 155);
/* oklch */ color: oklch(36.3% 0.186 278.7);

Tailwind

colors: {
  custom: {
    50: '#7a5eba',
    500: '#321f9b',
    950: '#000000',
  },
}

SCSS

$custom: #321f9b;
$custom-light: #7a5eba;
$custom-dark: #000000;

JSON

{
  "hex": "#321f9b",
  "rgb": {
    "r": 50,
    "g": 31,
    "b": 155
  },
  "hsl": {
    "h": 249.194,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.36278,
    "c": 0.18573,
    "h": 278.7
  },
  "luminance": 0.04025
}

Semantic roles & 50–950 ramp

primary

#321F9B

secondary

#B0C155

accent

#EA3ECF

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #321F9B

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

Preview Lab → · Contrast checker → · Palette generator →