#403FCB#403FCB

#403FCB is a mid, highly saturated blue. Relative luminance 0.090; OKLCH L 46.6% C 0.209 H 274.9°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#403FCB
RGB	rgb(64, 63, 203)
HSL	hsl(240, 57%, 52%)
HSV	hsv(240, 69%, 80%)
CMYK	cmyk(68.5%, 69%, 0%, 20.4%)
CIE-LAB	lab(35.90, 44.49, -72.13)
CIE-LCH	lch(35.90, 84.75, 301.67°)
OKLab	oklab(46.6% 0.018 -0.2084)
OKLCH	oklch(46.6% 0.209 274.9)
XYZ	xyz(14.6678, 8.9554, 57.4439)
Luminance	0.0896 (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

#403FCB #CACB3F

analogous

#3F84CB #403FCB #863FCB

triadic

#403FCB #CB403F #3FCB40

tetradic

#403FCB #CB3F84 #CACB3F #3FCB86

square

#403FCB #CB3F84 #CACB3F #3FCB86

split-complementary

#403FCB #CB863F #84CB3F

monochromatic

#1F1F71 #2C2CA1 #403FCB #706FD8 #A09FE5

Accessibility & contrast

On white

7.52

#403FCB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#403FCB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FCB

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FCB	#FFFFFF	#000000	##FFFFFF
##403FCB	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BCF

Deuteranopia (green-blind)

#004EC8

Tritanopia (blue-blind)

#006580

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #403fcb;
/* rgb */ color: rgb(64, 63, 203);
/* oklch */ color: oklch(46.6% 0.209 274.9);

Tailwind

colors: {
  custom: {
    50: '#8775dc',
    500: '#403fcb',
    950: '#000000',
  },
}

SCSS

$custom: #403fcb;
$custom-light: #8775dc;
$custom-dark: #000000;

JSON

{
  "hex": "#403fcb",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 203
  },
  "hsl": {
    "h": 240.429,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.46604,
    "c": 0.20918,
    "h": 274.9
  },
  "luminance": 0.08957
}

Semantic roles & 50–950 ramp

primary

#403FCB

secondary

#D1D194

accent

#E147E0

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #403FCB

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

Preview Lab → · Contrast checker → · Palette generator →