#301CB3#301CB3

#301CB3 is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 38.5% C 0.216 H 275.1°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#301CB3
RGB	rgb(48, 28, 179)
HSL	hsl(248, 73%, 41%)
HSV	hsv(248, 84%, 70%)
CMYK	cmyk(73.2%, 84.4%, 0%, 29.8%)
CIE-LAB	lab(25.90, 53.60, -74.53)
CIE-LCH	lch(25.90, 91.81, 305.72°)
OKLab	oklab(38.53% 0.0194 -0.2154)
OKLCH	oklch(38.53% 0.216 275.1)
XYZ	xyz(9.7682, 4.7126, 43.0339)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301CB3 #9FB31C

analogous

#1C53B3 #301CB3 #7B1CB3

triadic

#301CB3 #B3301C #1CB330

tetradic

#301CB3 #B31C53 #9FB31C #1CB37B

square

#301CB3 #B31C53 #9FB31C #1CB37B

split-complementary

#301CB3 #B37B1C #53B31C

monochromatic

#140B49 #22147E #301CB3 #452EDE #7463E7

Accessibility & contrast

On white

10.81

#301CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#301CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301CB3

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301CB3	#FFFFFF	#000000	##FFFFFF
##301CB3	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044B7

Deuteranopia (green-blind)

#0036B1

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #301cb3;
/* rgb */ color: rgb(48, 28, 179);
/* oklch */ color: oklch(38.5% 0.216 275.1);

Tailwind

colors: {
  custom: {
    50: '#7e5fcb',
    500: '#301cb3',
    950: '#000000',
  },
}

SCSS

$custom: #301cb3;
$custom-light: #7e5fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#301cb3",
  "rgb": {
    "r": 48,
    "g": 28,
    "b": 179
  },
  "hsl": {
    "h": 247.947,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.38531,
    "c": 0.21631,
    "h": 275.1
  },
  "luminance": 0.04714
}

Semantic roles & 50–950 ramp

primary

#301CB3

secondary

#BDCB5F

accent

#F038D7

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #301CB3

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

Preview Lab → · Contrast checker → · Palette generator →