#301F8A#301F8A

#301F8A is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.3% C 0.165 H 280.4°. Best body text is #FFFFFF at 12.44:1 contrast (WCAG AA passes).

Color values

HEX	#301F8A
RGB	rgb(48, 31, 138)
HSL	hsl(250, 63%, 33%)
HSV	hsv(250, 78%, 54%)
CMYK	cmyk(65.2%, 77.5%, 0%, 45.9%)
CIE-LAB	lab(21.74, 39.64, -56.37)
CIE-LCH	lch(21.74, 68.91, 305.11°)
OKLab	oklab(34.28% 0.0298 -0.1627)
OKLCH	oklch(34.28% 0.165 280.4)
XYZ	xyz(6.2949, 3.4428, 24.3726)
Luminance	0.0344 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301F8A #798A1F

analogous

#1F438A #301F8A #651F8A

triadic

#301F8A #8A301F #1F8A30

tetradic

#301F8A #8A1F43 #798A1F #1F8A65

square

#301F8A #8A1F43 #798A1F #1F8A65

split-complementary

#301F8A #8A651F #438A1F

monochromatic

#0D0926 #1F1458 #301F8A #412ABC #624CD7

Accessibility & contrast

On white

12.44

#301F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#301F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301F8A

12.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301F8A	#FFFFFF	#000000	##FFFFFF
##301F8A	1.00	12.44	1.69	12.44
#FFFFFF	12.44	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388D

Deuteranopia (green-blind)

#003088

Tritanopia (blue-blind)

#003E53

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #301f8a;
/* rgb */ color: rgb(48, 31, 138);
/* oklch */ color: oklch(34.3% 0.165 280.4);

Tailwind

colors: {
  custom: {
    50: '#755dad',
    500: '#301f8a',
    950: '#000000',
  },
}

SCSS

$custom: #301f8a;
$custom-light: #755dad;
$custom-dark: #000000;

JSON

{
  "hex": "#301f8a",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 138
  },
  "hsl": {
    "h": 249.533,
    "s": 63.314,
    "l": 33.137
  },
  "oklch": {
    "l": 0.34278,
    "c": 0.16539,
    "h": 280.4
  },
  "luminance": 0.03443
}

Semantic roles & 50–950 ramp

primary

#301F8A

secondary

#A8BA4B

accent

#E641CC

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #301F8A

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

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