#403FC9#403FC9

#403FC9 is a mid, highly saturated blue. Relative luminance 0.089; OKLCH L 46.4% C 0.207 H 275.1°. Best body text is #FFFFFF at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#403FC9
RGB	rgb(64, 63, 201)
HSL	hsl(240, 56%, 52%)
HSV	hsv(240, 69%, 79%)
CMYK	cmyk(68.2%, 68.7%, 0%, 21.2%)
CIE-LAB	lab(35.71, 43.83, -71.26)
CIE-LCH	lch(35.71, 83.67, 301.59°)
OKLab	oklab(46.42% 0.0183 -0.2059)
OKLCH	oklch(46.42% 0.207 275.1)
XYZ	xyz(14.4310, 8.8607, 56.1968)
Luminance	0.0886 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403FC9 #C8C93F

analogous

#3F83C9 #403FC9 #853FC9

triadic

#403FC9 #C9403F #3FC940

tetradic

#403FC9 #C93F83 #C8C93F #3FC985

square

#403FC9 #C93F83 #C8C93F #3FC985

split-complementary

#403FC9 #C9853F #83C93F

monochromatic

#201F6F #2D2D9E #403FC9 #706FD6 #9F9FE4

Accessibility & contrast

On white

7.57

#403FC9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#403FC9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FC9

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FC9	#FFFFFF	#000000	##FFFFFF
##403FC9	1.00	7.57	2.77	7.57
#FFFFFF	7.57	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ACD

Deuteranopia (green-blind)

#004EC6

Tritanopia (blue-blind)

#00647F

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #403fc9;
/* rgb */ color: rgb(64, 63, 201);
/* oklch */ color: oklch(46.4% 0.207 275.1);

Tailwind

colors: {
  custom: {
    50: '#8775db',
    500: '#403fc9',
    950: '#000000',
  },
}

SCSS

$custom: #403fc9;
$custom-light: #8775db;
$custom-dark: #000000;

JSON

{
  "hex": "#403fc9",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 201
  },
  "hsl": {
    "h": 240.435,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.46416,
    "c": 0.20669,
    "h": 275.1
  },
  "luminance": 0.08862
}

Semantic roles & 50–950 ramp

primary

#403FC9

secondary

#D0D094

accent

#DF48DE

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #403FC9

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

Preview Lab → · Contrast checker → · Palette generator →