#301F9F#301F9F

#301F9F is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.6% C 0.191 H 277.2°. Best body text is #FFFFFF at 11.52:1 contrast (WCAG AA passes).

Color values

HEX	#301F9F
RGB	rgb(48, 31, 159)
HSL	hsl(248, 67%, 37%)
HSV	hsv(248, 81%, 62%)
CMYK	cmyk(69.8%, 80.5%, 0%, 37.6%)
CIE-LAB	lab(24.03, 46.24, -65.55)
CIE-LCH	lch(24.03, 80.21, 305.20°)
OKLab	oklab(36.57% 0.0241 -0.1894)
OKLCH	oklch(36.57% 0.191 277.2)
XYZ	xyz(7.9649, 4.1108, 33.1679)
Luminance	0.0411 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301F9F #8E9F1F

analogous

#1F4E9F #301F9F #701F9F

triadic

#301F9F #9F301F #1F9F30

tetradic

#301F9F #9F1F4E #8E9F1F #1F9F70

square

#301F9F #9F1F4E #8E9F1F #1F9F70

split-complementary

#301F9F #9F701F #4E9F1F

monochromatic

#110B39 #21156C #301F9F #3F29D2 #6B5ADF

Accessibility & contrast

On white

11.52

#301F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#301F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301F9F

11.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301F9F	#FFFFFF	#000000	##FFFFFF
##301F9F	1.00	11.52	1.82	11.52
#FFFFFF	11.52	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA3

Deuteranopia (green-blind)

#00349D

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #301f9f;
/* rgb */ color: rgb(48, 31, 159);
/* oklch */ color: oklch(36.6% 0.191 277.2);

Tailwind

colors: {
  custom: {
    50: '#7a5fbd',
    500: '#301f9f',
    950: '#000000',
  },
}

SCSS

$custom: #301f9f;
$custom-light: #7a5fbd;
$custom-dark: #000000;

JSON

{
  "hex": "#301f9f",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 159
  },
  "hsl": {
    "h": 247.969,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.36566,
    "c": 0.19092,
    "h": 277.2
  },
  "luminance": 0.04112
}

Semantic roles & 50–950 ramp

primary

#301F9F

secondary

#B4C357

accent

#EA3ED3

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #301F9F

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

Preview Lab → · Contrast checker → · Palette generator →