#403FDB#403FDB

#403FDB is a mid, highly saturated blue. Relative luminance 0.098; OKLCH L 48.1% C 0.229 H 273.9°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#403FDB
RGB	rgb(64, 63, 219)
HSL	hsl(240, 68%, 55%)
HSV	hsv(240, 71%, 86%)
CMYK	cmyk(70.8%, 71.2%, 0%, 14.1%)
CIE-LAB	lab(37.40, 49.71, -78.89)
CIE-LCH	lch(37.40, 93.24, 302.22°)
OKLab	oklab(48.14% 0.0157 -0.2281)
OKLCH	oklch(48.14% 0.229 273.9)
XYZ	xyz(16.6738, 9.7578, 68.0088)
Luminance	0.0976 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 3.37

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403FDB #DADB3F

analogous

#3F8CDB #403FDB #8E3FDB

triadic

#403FDB #DB403F #3FDB40

tetradic

#403FDB #DB3F8C #DADB3F #3FDB8E

square

#403FDB #DB3F8C #DADB3F #3FDB8E

split-complementary

#403FDB #DB8E3F #8CDB3F

monochromatic

#1A1986 #2423BA #403FDB #7373E5 #A7A6EE

Accessibility & contrast

On white

7.11

#403FDB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#403FDB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FDB

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FDB	#FFFFFF	#000000	##FFFFFF
##403FDB	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FE0

Deuteranopia (green-blind)

#0051D8

Tritanopia (blue-blind)

#006B89

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #403fdb;
/* rgb */ color: rgb(64, 63, 219);
/* oklch */ color: oklch(48.1% 0.229 273.9);

Tailwind

colors: {
  custom: {
    50: '#8a76e7',
    500: '#403fdb',
    950: '#000000',
  },
}

SCSS

$custom: #403fdb;
$custom-light: #8a76e7;
$custom-dark: #000000;

JSON

{
  "hex": "#403fdb",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 219
  },
  "hsl": {
    "h": 240.385,
    "s": 68.421,
    "l": 55.294
  },
  "oklch": {
    "l": 0.48139,
    "c": 0.22867,
    "h": 273.9
  },
  "luminance": 0.09759
}

Semantic roles & 50–950 ramp

primary

#403FDB

secondary

#DBDC9A

accent

#EB3DEA

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #403FDB

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

Preview Lab → · Contrast checker → · Palette generator →