#301B9E#301B9E

#301B9E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 36.0% C 0.193 H 277.8°. Best body text is #FFFFFF at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#301B9E
RGB	rgb(48, 27, 158)
HSL	hsl(250, 71%, 36%)
HSV	hsv(250, 83%, 62%)
CMYK	cmyk(69.6%, 82.9%, 0%, 38%)
CIE-LAB	lab(23.27, 47.83, -66.20)
CIE-LCH	lch(23.27, 81.67, 305.85°)
OKLab	oklab(36% 0.0261 -0.1912)
OKLCH	oklch(36% 0.193 277.8)
XYZ	xyz(7.7804, 3.8802, 32.6800)
Luminance	0.0388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301B9E #899E1B

analogous

#1B489E #301B9E #721B9E

triadic

#301B9E #9E301B #1B9E30

tetradic

#301B9E #9E1B48 #899E1B #1B9E72

square

#301B9E #9E1B48 #899E1B #1B9E72

split-complementary

#301B9E #9E721B #489E1B

monochromatic

#100935 #20126A #301B9E #4024D2 #6952E1

Accessibility & contrast

On white

11.82

#301B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#301B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301B9E

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301B9E	#FFFFFF	#000000	##FFFFFF
##301B9E	1.00	11.82	1.78	11.82
#FFFFFF	11.82	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA2

Deuteranopia (green-blind)

#00329C

Tritanopia (blue-blind)

#00445E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #301b9e;
/* rgb */ color: rgb(48, 27, 158);
/* oklch */ color: oklch(36.0% 0.193 277.8);

Tailwind

colors: {
  custom: {
    50: '#7a5cbc',
    500: '#301b9e',
    950: '#000000',
  },
}

SCSS

$custom: #301b9e;
$custom-light: #7a5cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#301b9e",
  "rgb": {
    "r": 48,
    "g": 27,
    "b": 158
  },
  "hsl": {
    "h": 249.618,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.36004,
    "c": 0.19302,
    "h": 277.8
  },
  "luminance": 0.03881
}

Semantic roles & 50–950 ramp

primary

#301B9E

secondary

#B2C451

accent

#EE3AD1

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0412

muted

#7C7981

Preview Lab

Preview with #301B9E

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

Preview Lab → · Contrast checker → · Palette generator →