#301B9C#301B9C

#301B9C is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.8% C 0.191 H 278.1°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#301B9C
RGB	rgb(48, 27, 156)
HSL	hsl(250, 70%, 36%)
HSV	hsv(250, 83%, 61%)
CMYK	cmyk(69.2%, 82.7%, 0%, 38.8%)
CIE-LAB	lab(23.04, 47.23, -65.36)
CIE-LCH	lch(23.04, 80.63, 305.85°)
OKLab	oklab(35.78% 0.0268 -0.1888)
OKLCH	oklch(35.78% 0.191 278.1)
XYZ	xyz(7.6097, 3.8119, 31.7808)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301B9C #879C1B

analogous

#1B479C #301B9C #701B9C

triadic

#301B9C #9C301B #1B9C30

tetradic

#301B9C #9C1B47 #879C1B #1B9C70

square

#301B9C #9C1B47 #879C1B #1B9C70

split-complementary

#301B9C #9C701B #479C1B

monochromatic

#100934 #201268 #301B9C #4024D0 #6851E1

Accessibility & contrast

On white

11.91

#301B9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#301B9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301B9C

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301B9C	#FFFFFF	#000000	##FFFFFF
##301B9C	1.00	11.91	1.76	11.91
#FFFFFF	11.91	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9F

Deuteranopia (green-blind)

#00329A

Tritanopia (blue-blind)

#00435D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #301b9c;
/* rgb */ color: rgb(48, 27, 156);
/* oklch */ color: oklch(35.8% 0.191 278.1);

Tailwind

colors: {
  custom: {
    50: '#795cbb',
    500: '#301b9c',
    950: '#000000',
  },
}

SCSS

$custom: #301b9c;
$custom-light: #795cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#301b9c",
  "rgb": {
    "r": 48,
    "g": 27,
    "b": 156
  },
  "hsl": {
    "h": 249.767,
    "s": 70.492,
    "l": 35.882
  },
  "oklch": {
    "l": 0.35776,
    "c": 0.19069,
    "h": 278.1
  },
  "luminance": 0.03813
}

Semantic roles & 50–950 ramp

primary

#301B9C

secondary

#B1C34F

accent

#ED3BD0

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0B0412

muted

#7C7981

Preview Lab

Preview with #301B9C

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

Preview Lab → · Contrast checker → · Palette generator →