#403EA3#403EA3

#403EA3 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.9% C 0.158 H 278.2°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#403EA3
RGB	rgb(64, 62, 163)
HSL	hsl(241, 45%, 44%)
HSV	hsv(241, 62%, 64%)
CMYK	cmyk(60.7%, 62%, 0%, 36.1%)
CIE-LAB	lab(32.21, 31.69, -54.50)
CIE-LCH	lch(32.21, 63.05, 300.18°)
OKLab	oklab(42.86% 0.0227 -0.1567)
OKLCH	oklch(42.86% 0.158 278.2)
XYZ	xyz(10.4457, 7.1788, 35.4784)
Luminance	0.0718 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.93

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403EA3 #A1A33E

analogous

#3E6FA3 #403EA3 #733EA3

triadic

#403EA3 #A3403E #3EA340

tetradic

#403EA3 #A33E6F #A1A33E #3EA373

square

#403EA3 #A33E6F #A1A33E #3EA373

split-complementary

#403EA3 #A3733E #6FA33E

monochromatic

#1D1C4A #2F2D77 #403EA3 #5F5DC1 #8B89D2

Accessibility & contrast

On white

8.62

#403EA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#403EA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EA3

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EA3	#FFFFFF	#000000	##FFFFFF
##403EA3	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A6

Deuteranopia (green-blind)

#0048A1

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403ea3;
/* rgb */ color: rgb(64, 62, 163);
/* oklch */ color: oklch(42.9% 0.158 278.2);

Tailwind

colors: {
  custom: {
    50: '#7f73bf',
    500: '#403ea3',
    950: '#000000',
  },
}

SCSS

$custom: #403ea3;
$custom-light: #7f73bf;
$custom-dark: #000000;

JSON

{
  "hex": "#403ea3",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 163
  },
  "hsl": {
    "h": 241.188,
    "s": 44.889,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42857,
    "c": 0.15837,
    "h": 278.2
  },
  "luminance": 0.0718
}

Semantic roles & 50–950 ramp

primary

#403EA3

secondary

#BCBD80

accent

#D553D2

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403EA3

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

Preview Lab → · Contrast checker → · Palette generator →