#301F88#301F88

#301F88 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.1% C 0.163 H 280.7°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#301F88
RGB	rgb(48, 31, 136)
HSL	hsl(250, 63%, 33%)
HSV	hsv(250, 77%, 53%)
CMYK	cmyk(64.7%, 77.2%, 0%, 46.7%)
CIE-LAB	lab(21.53, 39.00, -55.47)
CIE-LCH	lch(21.53, 67.80, 305.11°)
OKLab	oklab(34.07% 0.0303 -0.16)
OKLCH	oklch(34.07% 0.163 280.7)
XYZ	xyz(6.1514, 3.3855, 23.6171)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301F88 #77881F

analogous

#1F4388 #301F88 #641F88

triadic

#301F88 #88301F #1F8830

tetradic

#301F88 #881F43 #77881F #1F8864

square

#301F88 #881F43 #77881F #1F8864

split-complementary

#301F88 #88641F #43881F

monochromatic

#0D0824 #1E1456 #301F88 #422ABA #624BD6

Accessibility & contrast

On white

12.52

#301F88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#301F88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301F88

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301F88	#FFFFFF	#000000	##FFFFFF
##301F88	1.00	12.52	1.68	12.52
#FFFFFF	12.52	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378B

Deuteranopia (green-blind)

#003086

Tritanopia (blue-blind)

#003D52

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #301f88;
/* rgb */ color: rgb(48, 31, 136);
/* oklch */ color: oklch(34.1% 0.163 280.7);

Tailwind

colors: {
  custom: {
    50: '#755dac',
    500: '#301f88',
    950: '#000000',
  },
}

SCSS

$custom: #301f88;
$custom-light: #755dac;
$custom-dark: #000000;

JSON

{
  "hex": "#301f88",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 136
  },
  "hsl": {
    "h": 249.714,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.34067,
    "c": 0.16289,
    "h": 280.7
  },
  "luminance": 0.03386
}

Semantic roles & 50–950 ramp

primary

#301F88

secondary

#A7B94A

accent

#E642CB

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #301F88

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

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