#403FC3#403FC3

#403FC3 is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.9% C 0.199 H 275.5°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#403FC3
RGB	rgb(64, 63, 195)
HSL	hsl(240, 52%, 51%)
HSV	hsv(240, 68%, 76%)
CMYK	cmyk(67.2%, 67.7%, 0%, 23.5%)
CIE-LAB	lab(35.17, 41.84, -68.66)
CIE-LCH	lch(35.17, 80.40, 301.36°)
OKLab	oklab(45.86% 0.019 -0.1982)
OKLCH	oklch(45.86% 0.199 275.5)
XYZ	xyz(13.7389, 8.5839, 52.5520)
Luminance	0.0858 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.77

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403FC3 #C2C33F

analogous

#3F80C3 #403FC3 #823FC3

triadic

#403FC3 #C3403F #3FC340

tetradic

#403FC3 #C33F80 #C2C33F #3FC382

square

#403FC3 #C33F80 #C2C33F #3FC382

split-complementary

#403FC3 #C3823F #80C33F

monochromatic

#212067 #302F96 #403FC3 #6E6ED2 #9D9CE0

Accessibility & contrast

On white

7.73

#403FC3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#403FC3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FC3

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FC3	#FFFFFF	#000000	##FFFFFF
##403FC3	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C7

Deuteranopia (green-blind)

#004DC1

Tritanopia (blue-blind)

#00627C

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #403fc3;
/* rgb */ color: rgb(64, 63, 195);
/* oklch */ color: oklch(45.9% 0.199 275.5);

Tailwind

colors: {
  custom: {
    50: '#8575d6',
    500: '#403fc3',
    950: '#000000',
  },
}

SCSS

$custom: #403fc3;
$custom-light: #8575d6;
$custom-dark: #000000;

JSON

{
  "hex": "#403fc3",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 195
  },
  "hsl": {
    "h": 240.455,
    "s": 52.381,
    "l": 50.588
  },
  "oklch": {
    "l": 0.45857,
    "c": 0.19916,
    "h": 275.5
  },
  "luminance": 0.08585
}

Semantic roles & 50–950 ramp

primary

#403FC3

secondary

#CCCC92

accent

#DC4CDB

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0D0814

muted

#7D7B83

Preview Lab

Preview with #403FC3

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

Preview Lab → · Contrast checker → · Palette generator →