#301F9D#301F9D

#301F9D is a dark, vivid blue. Relative luminance 0.040; OKLCH L 36.3% C 0.189 H 277.5°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#301F9D
RGB	rgb(48, 31, 157)
HSL	hsl(248, 67%, 37%)
HSV	hsv(248, 80%, 62%)
CMYK	cmyk(69.4%, 80.3%, 0%, 38.4%)
CIE-LAB	lab(23.81, 45.62, -64.70)
CIE-LCH	lch(23.81, 79.16, 305.19°)
OKLab	oklab(36.34% 0.0246 -0.1869)
OKLCH	oklch(36.34% 0.189 277.5)
XYZ	xyz(7.7927, 4.0420, 32.2613)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301F9D #8C9D1F

analogous

#1F4D9D #301F9D #6F1F9D

triadic

#301F9D #9D301F #1F9D30

tetradic

#301F9D #9D1F4D #8C9D1F #1F9D6F

square

#301F9D #9D1F4D #8C9D1F #1F9D6F

split-complementary

#301F9D #9D6F1F #4D9D1F

monochromatic

#110B37 #20156A #301F9D #4029D0 #6A58DE

Accessibility & contrast

On white

11.61

#301F9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#301F9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301F9D

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301F9D	#FFFFFF	#000000	##FFFFFF
##301F9D	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA0

Deuteranopia (green-blind)

#00339B

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #301f9d;
/* rgb */ color: rgb(48, 31, 157);
/* oklch */ color: oklch(36.3% 0.189 277.5);

Tailwind

colors: {
  custom: {
    50: '#795ebb',
    500: '#301f9d',
    950: '#000000',
  },
}

SCSS

$custom: #301f9d;
$custom-light: #795ebb;
$custom-dark: #000000;

JSON

{
  "hex": "#301f9d",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 157
  },
  "hsl": {
    "h": 248.095,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.36344,
    "c": 0.18855,
    "h": 277.5
  },
  "luminance": 0.04043
}

Semantic roles & 50–950 ramp

primary

#301F9D

secondary

#B3C256

accent

#EA3ED3

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #301F9D

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

Preview Lab → · Contrast checker → · Palette generator →