#301B9B#301B9B

#301B9B is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.7% C 0.190 H 278.2°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#301B9B
RGB	rgb(48, 27, 155)
HSL	hsl(250, 70%, 36%)
HSV	hsv(250, 83%, 61%)
CMYK	cmyk(69%, 82.6%, 0%, 39.2%)
CIE-LAB	lab(22.92, 46.92, -64.94)
CIE-LCH	lch(22.92, 80.12, 305.85°)
OKLab	oklab(35.66% 0.0271 -0.1876)
OKLCH	oklch(35.66% 0.19 278.2)
XYZ	xyz(7.5253, 3.7781, 31.3367)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301B9B #869B1B

analogous

#1B469B #301B9B #701B9B

triadic

#301B9B #9B301B #1B9B30

tetradic

#301B9B #9B1B46 #869B1B #1B9B70

square

#301B9B #9B1B46 #869B1B #1B9B70

split-complementary

#301B9B #9B701B #469B1B

monochromatic

#100933 #201267 #301B9B #4024CF #6850E0

Accessibility & contrast

On white

11.96

#301B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#301B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301B9B

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301B9B	#FFFFFF	#000000	##FFFFFF
##301B9B	1.00	11.96	1.76	11.96
#FFFFFF	11.96	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9E

Deuteranopia (green-blind)

#003199

Tritanopia (blue-blind)

#00435C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #301b9b;
/* rgb */ color: rgb(48, 27, 155);
/* oklch */ color: oklch(35.7% 0.190 278.2);

Tailwind

colors: {
  custom: {
    50: '#795cba',
    500: '#301b9b',
    950: '#000000',
  },
}

SCSS

$custom: #301b9b;
$custom-light: #795cba;
$custom-dark: #000000;

JSON

{
  "hex": "#301b9b",
  "rgb": {
    "r": 48,
    "g": 27,
    "b": 155
  },
  "hsl": {
    "h": 249.844,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.35663,
    "c": 0.18951,
    "h": 278.2
  },
  "luminance": 0.03779
}

Semantic roles & 50–950 ramp

primary

#301B9B

secondary

#B0C34F

accent

#ED3BD0

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0B0412

muted

#7C7981

Preview Lab

Preview with #301B9B

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

Preview Lab → · Contrast checker → · Palette generator →