#301DB3#301DB3

#301DB3 is a dark, highly saturated blue. Relative luminance 0.048; OKLCH L 38.6% C 0.216 H 275.1°. Best body text is #FFFFFF at 10.76:1 contrast (WCAG AA passes).

Color values

HEX	#301DB3
RGB	rgb(48, 29, 179)
HSL	hsl(248, 72%, 41%)
HSV	hsv(248, 84%, 70%)
CMYK	cmyk(73.2%, 83.8%, 0%, 29.8%)
CIE-LAB	lab(26.04, 53.18, -74.30)
CIE-LCH	lch(26.04, 91.37, 305.60°)
OKLab	oklab(38.63% 0.0191 -0.2148)
OKLCH	oklch(38.63% 0.216 275.1)
XYZ	xyz(9.7923, 4.7608, 43.0419)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301DB3 #A0B31D

analogous

#1D55B3 #301DB3 #7B1DB3

triadic

#301DB3 #B3301D #1DB330

tetradic

#301DB3 #B31D55 #A0B31D #1DB37B

square

#301DB3 #B31D55 #A0B31D #1DB37B

split-complementary

#301DB3 #B37B1D #55B31D

monochromatic

#140C4A #22147E #301DB3 #4630DD #7564E6

Accessibility & contrast

On white

10.76

#301DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#301DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301DB3

10.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301DB3	#FFFFFF	#000000	##FFFFFF
##301DB3	1.00	10.76	1.95	10.76
#FFFFFF	10.76	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044B7

Deuteranopia (green-blind)

#0037B1

Tritanopia (blue-blind)

#004E6B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #301db3;
/* rgb */ color: rgb(48, 29, 179);
/* oklch */ color: oklch(38.6% 0.216 275.1);

Tailwind

colors: {
  custom: {
    50: '#7e5fcb',
    500: '#301db3',
    950: '#000000',
  },
}

SCSS

$custom: #301db3;
$custom-light: #7e5fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#301db3",
  "rgb": {
    "r": 48,
    "g": 29,
    "b": 179
  },
  "hsl": {
    "h": 247.6,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.38629,
    "c": 0.21562,
    "h": 275.1
  },
  "luminance": 0.04762
}

Semantic roles & 50–950 ramp

primary

#301DB3

secondary

#BECB61

accent

#EF39D8

background

#F8F5FC

surface

#F0EAF9

border

#CBC6D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #301DB3

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

Preview Lab → · Contrast checker → · Palette generator →