#301F9C#301F9C

#301F9C is a dark, vivid blue. Relative luminance 0.040; OKLCH L 36.2% C 0.187 H 277.6°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#301F9C
RGB	rgb(48, 31, 156)
HSL	hsl(248, 67%, 37%)
HSV	hsv(248, 80%, 61%)
CMYK	cmyk(69.2%, 80.1%, 0%, 38.8%)
CIE-LAB	lab(23.70, 45.31, -64.27)
CIE-LCH	lch(23.70, 78.63, 305.18°)
OKLab	oklab(36.23% 0.0249 -0.1857)
OKLCH	oklch(36.23% 0.187 277.6)
XYZ	xyz(7.7077, 4.0080, 31.8135)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301F9C #8B9C1F

analogous

#1F4D9C #301F9C #6F1F9C

triadic

#301F9C #9C301F #1F9C30

tetradic

#301F9C #9C1F4D #8B9C1F #1F9C6F

square

#301F9C #9C1F4D #8B9C1F #1F9C6F

split-complementary

#301F9C #9C6F1F #4D9C1F

monochromatic

#110B36 #201569 #301F9C #4029CF #6A58DE

Accessibility & contrast

On white

11.66

#301F9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#301F9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301F9C

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301F9C	#FFFFFF	#000000	##FFFFFF
##301F9C	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D9F

Deuteranopia (green-blind)

#00339A

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #301f9c;
/* rgb */ color: rgb(48, 31, 156);
/* oklch */ color: oklch(36.2% 0.187 277.6);

Tailwind

colors: {
  custom: {
    50: '#795eba',
    500: '#301f9c',
    950: '#000000',
  },
}

SCSS

$custom: #301f9c;
$custom-light: #795eba;
$custom-dark: #000000;

JSON

{
  "hex": "#301f9c",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 156
  },
  "hsl": {
    "h": 248.16,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.36233,
    "c": 0.18735,
    "h": 277.6
  },
  "luminance": 0.04009
}

Semantic roles & 50–950 ramp

primary

#301F9C

secondary

#B3C155

accent

#EA3ED2

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #301F9C

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

Preview Lab → · Contrast checker → · Palette generator →