#301B66#301B66

#301B66 is a dark, vivid violet. Relative luminance 0.024; OKLCH L 30.1% C 0.124 H 289.7°. Best body text is #FFFFFF at 14.24:1 contrast (WCAG AA passes).

Color values

HEX	#301B66
RGB	rgb(48, 27, 102)
HSL	hsl(257, 58%, 25%)
HSV	hsv(257, 74%, 40%)
CMYK	cmyk(52.9%, 73.5%, 0%, 60%)
CIE-LAB	lab(17.33, 30.39, -40.55)
CIE-LCH	lch(17.33, 50.67, 306.85°)
OKLab	oklab(30.06% 0.0417 -0.1163)
OKLCH	oklch(30.06% 0.124 289.7)
XYZ	xyz(4.0084, 2.3714, 12.8143)
Luminance	0.0237 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

#4B006E

ΔE00 7.01

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301B66 #51661B

analogous

#1B2B66 #301B66 #551B66

triadic

#301B66 #66301B #1B6630

tetradic

#301B66 #661B2B #51661B #1B6655

square

#301B66 #661B2B #51661B #1B6655

split-complementary

#301B66 #66551B #2B661B

monochromatic

#0B0618 #190E36 #301B66 #472896 #5E35C7

Accessibility & contrast

On white

14.24

#301B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#301B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301B66

14.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301B66	#FFFFFF	#000000	##FFFFFF
##301B66	1.00	14.24	1.47	14.24
#FFFFFF	14.24	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C68

Deuteranopia (green-blind)

#002965

Tritanopia (blue-blind)

#1D2E3E

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #301b66;
/* rgb */ color: rgb(48, 27, 102);
/* oklch */ color: oklch(30.1% 0.124 289.7);

Tailwind

colors: {
  custom: {
    50: '#6e5992',
    500: '#301b66',
    950: '#000000',
  },
}

SCSS

$custom: #301b66;
$custom-light: #6e5992;
$custom-dark: #000000;

JSON

{
  "hex": "#301b66",
  "rgb": {
    "r": 48,
    "g": 27,
    "b": 102
  },
  "hsl": {
    "h": 256.8,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.3006,
    "c": 0.12358,
    "h": 289.7
  },
  "luminance": 0.02372
}

Semantic roles & 50–950 ramp

primary

#301B66

secondary

#829B41

accent

#E146B6

background

#F6F5F9

surface

#ECE9F1

border

#C7C5CB

text

#08030D

muted

#7B787E

Preview Lab

Preview with #301B66

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

Preview Lab → · Contrast checker → · Palette generator →