#403FC1#403FC1

#403FC1 is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.7% C 0.197 H 275.6°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#403FC1
RGB	rgb(64, 63, 193)
HSL	hsl(240, 51%, 50%)
HSV	hsv(240, 67%, 76%)
CMYK	cmyk(66.8%, 67.4%, 0%, 24.3%)
CIE-LAB	lab(34.99, 41.18, -67.78)
CIE-LCH	lch(34.99, 79.31, 301.28°)
OKLab	oklab(45.67% 0.0193 -0.1957)
OKLCH	oklch(45.67% 0.197 275.6)
XYZ	xyz(13.5143, 8.4941, 51.3691)
Luminance	0.0849 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.62

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403FC1 #C0C13F

analogous

#3F7FC1 #403FC1 #813FC1

triadic

#403FC1 #C1403F #3FC140

tetradic

#403FC1 #C13F7F #C0C13F #3FC181

square

#403FC1 #C13F7F #C0C13F #3FC181

split-complementary

#403FC1 #C1813F #7FC13F

monochromatic

#212165 #303093 #403FC1 #6E6DD0 #9C9CDF

Accessibility & contrast

On white

7.78

#403FC1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#403FC1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FC1

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FC1	#FFFFFF	#000000	##FFFFFF
##403FC1	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C5

Deuteranopia (green-blind)

#004CBF

Tritanopia (blue-blind)

#00627B

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #403fc1;
/* rgb */ color: rgb(64, 63, 193);
/* oklch */ color: oklch(45.7% 0.197 275.6);

Tailwind

colors: {
  custom: {
    50: '#8575d5',
    500: '#403fc1',
    950: '#000000',
  },
}

SCSS

$custom: #403fc1;
$custom-light: #8575d5;
$custom-dark: #000000;

JSON

{
  "hex": "#403fc1",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 193
  },
  "hsl": {
    "h": 240.462,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.45673,
    "c": 0.19663,
    "h": 275.6
  },
  "luminance": 0.08495
}

Semantic roles & 50–950 ramp

primary

#403FC1

secondary

#CBCB91

accent

#DB4DDA

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #403FC1

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

Preview Lab → · Contrast checker → · Palette generator →