#301C99#301C99

#301C99 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.5% C 0.186 H 278.4°. Best body text is #FFFFFF at 11.99:1 contrast (WCAG AA passes).

Color values

HEX	#301C99
RGB	rgb(48, 28, 153)
HSL	hsl(250, 69%, 35%)
HSV	hsv(250, 82%, 60%)
CMYK	cmyk(68.6%, 81.7%, 0%, 40%)
CIE-LAB	lab(22.86, 45.85, -63.82)
CIE-LCH	lch(22.86, 78.58, 305.69°)
OKLab	oklab(35.55% 0.0272 -0.1844)
OKLCH	oklch(35.55% 0.186 278.4)
XYZ	xyz(7.3821, 3.7582, 30.4672)
Luminance	0.0376 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301C99 #85991C

analogous

#1C4699 #301C99 #6E1C99

triadic

#301C99 #99301C #1C9930

tetradic

#301C99 #991C46 #85991C #1C996E

square

#301C99 #991C46 #85991C #1C996E

split-complementary

#301C99 #996E1C #46991C

monochromatic

#100932 #201365 #301C99 #4025CD #6750DF

Accessibility & contrast

On white

11.99

#301C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#301C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301C99

11.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301C99	#FFFFFF	#000000	##FFFFFF
##301C99	1.00	11.99	1.75	11.99
#FFFFFF	11.99	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9C

Deuteranopia (green-blind)

#003197

Tritanopia (blue-blind)

#00435B

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #301c99;
/* rgb */ color: rgb(48, 28, 153);
/* oklch */ color: oklch(35.5% 0.186 278.4);

Tailwind

colors: {
  custom: {
    50: '#795db8',
    500: '#301c99',
    950: '#000000',
  },
}

SCSS

$custom: #301c99;
$custom-light: #795db8;
$custom-dark: #000000;

JSON

{
  "hex": "#301c99",
  "rgb": {
    "r": 48,
    "g": 28,
    "b": 153
  },
  "hsl": {
    "h": 249.6,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.35548,
    "c": 0.18635,
    "h": 278.4
  },
  "luminance": 0.03759
}

Semantic roles & 50–950 ramp

primary

#301C99

secondary

#AFC24F

accent

#EC3CD0

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #301C99

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

Preview Lab → · Contrast checker → · Palette generator →