#301B9F#301B9F

#301B9F is a dark, vivid blue. Relative luminance 0.039; OKLCH L 36.1% C 0.194 H 277.6°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#301B9F
RGB	rgb(48, 27, 159)
HSL	hsl(250, 71%, 36%)
HSV	hsv(250, 83%, 62%)
CMYK	cmyk(69.8%, 83%, 0%, 37.6%)
CIE-LAB	lab(23.39, 48.13, -66.62)
CIE-LCH	lch(23.39, 82.18, 305.85°)
OKLab	oklab(36.12% 0.0258 -0.1924)
OKLCH	oklch(36.12% 0.194 277.6)
XYZ	xyz(7.8668, 3.9147, 33.1352)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301B9F #8A9F1B

analogous

#1B489F #301B9F #721B9F

triadic

#301B9F #9F301B #1B9F30

tetradic

#301B9F #9F1B48 #8A9F1B #1B9F72

square

#301B9F #9F1B48 #8A9F1B #1B9F72

split-complementary

#301B9F #9F721B #489F1B

monochromatic

#100936 #20126B #301B9F #4024D3 #6953E2

Accessibility & contrast

On white

11.78

#301B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#301B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301B9F

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301B9F	#FFFFFF	#000000	##FFFFFF
##301B9F	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA3

Deuteranopia (green-blind)

#00329D

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #301b9f;
/* rgb */ color: rgb(48, 27, 159);
/* oklch */ color: oklch(36.1% 0.194 277.6);

Tailwind

colors: {
  custom: {
    50: '#7a5dbd',
    500: '#301b9f',
    950: '#000000',
  },
}

SCSS

$custom: #301b9f;
$custom-light: #7a5dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#301b9f",
  "rgb": {
    "r": 48,
    "g": 27,
    "b": 159
  },
  "hsl": {
    "h": 249.545,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.36118,
    "c": 0.19417,
    "h": 277.6
  },
  "luminance": 0.03915
}

Semantic roles & 50–950 ramp

primary

#301B9F

secondary

#B2C551

accent

#EE3AD1

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0412

muted

#7C7981

Preview Lab

Preview with #301B9F

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

Preview Lab → · Contrast checker → · Palette generator →