#403FA7#403FA7

#403FA7 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.163 H 277.6°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#403FA7
RGB	rgb(64, 63, 167)
HSL	hsl(241, 45%, 45%)
HSV	hsv(241, 62%, 65%)
CMYK	cmyk(61.7%, 62.3%, 0%, 34.5%)
CIE-LAB	lab(32.78, 32.42, -55.99)
CIE-LCH	lch(32.78, 64.70, 300.07°)
OKLab	oklab(43.37% 0.0216 -0.1611)
OKLCH	oklch(43.37% 0.163 277.6)
XYZ	xyz(10.8647, 7.4342, 37.4141)
Luminance	0.0743 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.48

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403FA7 #A6A73F

analogous

#3F72A7 #403FA7 #743FA7

triadic

#403FA7 #A7403F #3FA740

tetradic

#403FA7 #A73F72 #A6A73F #3FA774

square

#403FA7 #A73F72 #A6A73F #3FA774

split-complementary

#403FA7 #A7743F #72A73F

monochromatic

#1E1D4E #2F2E7B #403FA7 #6160C3 #8D8DD4

Accessibility & contrast

On white

8.44

#403FA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#403FA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FA7

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FA7	#FFFFFF	#000000	##FFFFFF
##403FA7	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AA

Deuteranopia (green-blind)

#0049A5

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403fa7;
/* rgb */ color: rgb(64, 63, 167);
/* oklch */ color: oklch(43.4% 0.163 277.6);

Tailwind

colors: {
  custom: {
    50: '#8074c2',
    500: '#403fa7',
    950: '#000000',
  },
}

SCSS

$custom: #403fa7;
$custom-light: #8074c2;
$custom-dark: #000000;

JSON

{
  "hex": "#403fa7",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 167
  },
  "hsl": {
    "h": 240.577,
    "s": 45.217,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43373,
    "c": 0.16254,
    "h": 277.6
  },
  "luminance": 0.07435
}

Semantic roles & 50–950 ramp

primary

#403FA7

secondary

#BEBF83

accent

#D553D4

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403FA7

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

Preview Lab → · Contrast checker → · Palette generator →