#301F8F#301F8F

#301F8F is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.8% C 0.172 H 279.5°. Best body text is #FFFFFF at 12.22:1 contrast (WCAG AA passes).

Color values

HEX	#301F8F
RGB	rgb(48, 31, 143)
HSL	hsl(249, 64%, 34%)
HSV	hsv(249, 78%, 56%)
CMYK	cmyk(66.4%, 78.3%, 0%, 43.9%)
CIE-LAB	lab(22.27, 41.23, -58.61)
CIE-LCH	lch(22.27, 71.66, 305.13°)
OKLab	oklab(34.81% 0.0285 -0.1692)
OKLCH	oklch(34.81% 0.172 279.5)
XYZ	xyz(6.6653, 3.5910, 26.3232)
Luminance	0.0359 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301F8F #7E8F1F

analogous

#1F468F #301F8F #681F8F

triadic

#301F8F #8F301F #1F8F30

tetradic

#301F8F #8F1F46 #7E8F1F #1F8F68

square

#301F8F #8F1F46 #7E8F1F #1F8F68

split-complementary

#301F8F #8F681F #468F1F

monochromatic

#0E092A #1F145D #301F8F #412AC1 #644FD9

Accessibility & contrast

On white

12.22

#301F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#301F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301F8F

12.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301F8F	#FFFFFF	#000000	##FFFFFF
##301F8F	1.00	12.22	1.72	12.22
#FFFFFF	12.22	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003992

Deuteranopia (green-blind)

#00318D

Tritanopia (blue-blind)

#004056

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #301f8f;
/* rgb */ color: rgb(48, 31, 143);
/* oklch */ color: oklch(34.8% 0.172 279.5);

Tailwind

colors: {
  custom: {
    50: '#765eb1',
    500: '#301f8f',
    950: '#000000',
  },
}

SCSS

$custom: #301f8f;
$custom-light: #765eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#301f8f",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 143
  },
  "hsl": {
    "h": 249.107,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.34813,
    "c": 0.17159,
    "h": 279.5
  },
  "luminance": 0.03592
}

Semantic roles & 50–950 ramp

primary

#301F8F

secondary

#ABBC4E

accent

#E740CE

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #301F8F

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

Preview Lab → · Contrast checker → · Palette generator →