#403FD9#403FD9

#403FD9 is a mid, highly saturated blue. Relative luminance 0.097; OKLCH L 47.9% C 0.226 H 274.0°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#403FD9
RGB	rgb(64, 63, 217)
HSL	hsl(240, 67%, 55%)
HSV	hsv(240, 71%, 85%)
CMYK	cmyk(70.5%, 71%, 0%, 14.9%)
CIE-LAB	lab(37.21, 49.06, -78.05)
CIE-LCH	lch(37.21, 92.19, 302.15°)
OKLab	oklab(47.94% 0.016 -0.2257)
OKLCH	oklch(47.94% 0.226 274)
XYZ	xyz(16.4121, 9.6532, 66.6305)
Luminance	0.0965 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 3.28

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403FD9 #D8D93F

analogous

#3F8BD9 #403FD9 #8D3FD9

triadic

#403FD9 #D9403F #3FD940

tetradic

#403FD9 #D93F8B #D8D93F #3FD98D

square

#403FD9 #D93F8B #D8D93F #3FD98D

split-complementary

#403FD9 #D98D3F #8BD93F

monochromatic

#1B1A84 #2524B7 #403FD9 #7372E3 #A6A5ED

Accessibility & contrast

On white

7.16

#403FD9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#403FD9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FD9

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FD9	#FFFFFF	#000000	##FFFFFF
##403FD9	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FDE

Deuteranopia (green-blind)

#0050D6

Tritanopia (blue-blind)

#006A88

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #403fd9;
/* rgb */ color: rgb(64, 63, 217);
/* oklch */ color: oklch(47.9% 0.226 274.0);

Tailwind

colors: {
  custom: {
    50: '#8a75e6',
    500: '#403fd9',
    950: '#000000',
  },
}

SCSS

$custom: #403fd9;
$custom-light: #8a75e6;
$custom-dark: #000000;

JSON

{
  "hex": "#403fd9",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 217
  },
  "hsl": {
    "h": 240.39,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.47944,
    "c": 0.22626,
    "h": 274
  },
  "luminance": 0.09655
}

Semantic roles & 50–950 ramp

primary

#403FD9

secondary

#DADA9A

accent

#EA3EE9

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #403FD9

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

Preview Lab → · Contrast checker → · Palette generator →