#301F9E#301F9E

#301F9E is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.5% C 0.190 H 277.4°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#301F9E
RGB	rgb(48, 31, 158)
HSL	hsl(248, 67%, 37%)
HSV	hsv(248, 80%, 62%)
CMYK	cmyk(69.6%, 80.4%, 0%, 38%)
CIE-LAB	lab(23.92, 45.93, -65.12)
CIE-LCH	lch(23.92, 79.69, 305.20°)
OKLab	oklab(36.46% 0.0244 -0.1882)
OKLCH	oklch(36.46% 0.19 277.4)
XYZ	xyz(7.8785, 4.0763, 32.7127)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301F9E #8D9E1F

analogous

#1F4E9E #301F9E #6F1F9E

triadic

#301F9E #9E301F #1F9E30

tetradic

#301F9E #9E1F4E #8D9E1F #1F9E6F

square

#301F9E #9E1F4E #8D9E1F #1F9E6F

split-complementary

#301F9E #9E6F1F #4E9E1F

monochromatic

#110B38 #20156B #301F9E #4029D1 #6B59DE

Accessibility & contrast

On white

11.57

#301F9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#301F9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301F9E

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301F9E	#FFFFFF	#000000	##FFFFFF
##301F9E	1.00	11.57	1.82	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA2

Deuteranopia (green-blind)

#00339C

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #301f9e;
/* rgb */ color: rgb(48, 31, 158);
/* oklch */ color: oklch(36.5% 0.190 277.4);

Tailwind

colors: {
  custom: {
    50: '#795fbc',
    500: '#301f9e',
    950: '#000000',
  },
}

SCSS

$custom: #301f9e;
$custom-light: #795fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#301f9e",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 158
  },
  "hsl": {
    "h": 248.031,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.36455,
    "c": 0.18974,
    "h": 277.4
  },
  "luminance": 0.04077
}

Semantic roles & 50–950 ramp

primary

#301F9E

secondary

#B4C256

accent

#EA3ED3

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #301F9E

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

Preview Lab → · Contrast checker → · Palette generator →