#403FFF#403FFF

#403FFF is a mid, highly saturated blue. Relative luminance 0.119; OKLCH L 51.8% C 0.270 H 272.0°. Best body text is #FFFFFF at 6.23:1 contrast (WCAG AA passes).

Color values

HEX	#403FFF
RGB	rgb(64, 63, 255)
HSL	hsl(240, 100%, 62%)
HSV	hsv(240, 75%, 100%)
CMYK	cmyk(74.9%, 75.3%, 0%, 0%)
CIE-LAB	lab(41.00, 61.02, -93.32)
CIE-LCH	lch(41.00, 111.50, 303.18°)
OKLab	oklab(51.75% 0.0094 -0.2701)
OKLCH	oklch(51.75% 0.27 272)
XYZ	xyz(21.9358, 11.8626, 95.7220)
Luminance	0.1187 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403FFF #FEFF3F

analogous

#3F9EFF #403FFF #A03FFF

triadic

#403FFF #FF403F #3FFF40

tetradic

#403FFF #FF3F9E #FEFF3F #3FFFA0

square

#403FFF #FF3F9E #FEFF3F #3FFFA0

split-complementary

#403FFF #FFA03F #9EFF3F

monochromatic

#0100C4 #0302FF #403FFF #7D7CFF #BAB9FF

Accessibility & contrast

On white

6.23

#403FFF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#403FFF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #403FFF

6.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FFF	#FFFFFF	#000000	##FFFFFF
##403FFF	1.00	6.23	3.37	6.23
#FFFFFF	6.23	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AFF

Deuteranopia (green-blind)

#0057FC

Tritanopia (blue-blind)

#00799D

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #403fff;
/* rgb */ color: rgb(64, 63, 255);
/* oklch */ color: oklch(51.8% 0.270 272.0);

Tailwind

colors: {
  custom: {
    50: '#9277ff',
    500: '#403fff',
    950: '#000000',
  },
}

SCSS

$custom: #403fff;
$custom-light: #9277ff;
$custom-dark: #000000;

JSON

{
  "hex": "#403fff",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 255
  },
  "hsl": {
    "h": 240.312,
    "s": 100,
    "l": 62.353
  },
  "oklch": {
    "l": 0.51754,
    "c": 0.2703,
    "h": 272
  },
  "luminance": 0.11865
}

Semantic roles & 50–950 ramp

primary

#403FFF

secondary

#F0F0AA

accent

#E600E4

background

#FAF7FF

surface

#F4EDFF

border

#CEC8D7

text

#0F0918

muted

#7F7B86

Preview Lab

Preview with #403FFF

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

Preview Lab → · Contrast checker → · Palette generator →