#403CB7#403CB7

#403CB7 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.3% C 0.187 H 277.0°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#403CB7
RGB	rgb(64, 60, 183)
HSL	hsl(242, 51%, 48%)
HSV	hsv(242, 67%, 72%)
CMYK	cmyk(65%, 67.2%, 0%, 28.2%)
CIE-LAB	lab(33.43, 39.65, -64.44)
CIE-LCH	lch(33.43, 75.67, 301.60°)
OKLab	oklab(44.27% 0.0227 -0.1859)
OKLCH	oklch(44.27% 0.187 277)
XYZ	xyz(12.2747, 7.7396, 45.6376)
Luminance	0.0774 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.50

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403CB7 #B3B73C

analogous

#3C76B7 #403CB7 #7D3CB7

triadic

#403CB7 #B7403C #3CB740

tetradic

#403CB7 #B73C76 #B3B73C #3CB77D

square

#403CB7 #B73C76 #B3B73C #3CB77D

split-complementary

#403CB7 #B77D3C #76B73C

monochromatic

#201E5B #302D89 #403CB7 #6764CC #9492DB

Accessibility & contrast

On white

8.24

#403CB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#403CB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CB7

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CB7	#FFFFFF	#000000	##FFFFFF
##403CB7	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BB

Deuteranopia (green-blind)

#0049B5

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403cb7;
/* rgb */ color: rgb(64, 60, 183);
/* oklch */ color: oklch(44.3% 0.187 277.0);

Tailwind

colors: {
  custom: {
    50: '#8372ce',
    500: '#403cb7',
    950: '#000000',
  },
}

SCSS

$custom: #403cb7;
$custom-light: #8372ce;
$custom-dark: #000000;

JSON

{
  "hex": "#403cb7",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 183
  },
  "hsl": {
    "h": 241.951,
    "s": 50.617,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44274,
    "c": 0.1873,
    "h": 277
  },
  "luminance": 0.07741
}

Semantic roles & 50–950 ramp

primary

#403CB7

secondary

#C4C688

accent

#DA4ED6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403CB7

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

Preview Lab → · Contrast checker → · Palette generator →