#403CA3#403CA3

#403CA3 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.161 H 278.8°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#403CA3
RGB	rgb(64, 60, 163)
HSL	hsl(242, 46%, 44%)
HSV	hsv(242, 63%, 64%)
CMYK	cmyk(60.7%, 63.2%, 0%, 36.1%)
CIE-LAB	lab(31.73, 32.96, -55.29)
CIE-LCH	lch(31.73, 64.37, 300.80°)
OKLab	oklab(42.5% 0.0246 -0.1591)
OKLCH	oklch(42.5% 0.161 278.8)
XYZ	xyz(10.3390, 6.9653, 35.4428)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.81

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403CA3 #9FA33C

analogous

#3C6BA3 #403CA3 #733CA3

triadic

#403CA3 #A3403C #3CA340

tetradic

#403CA3 #A33C6B #9FA33C #3CA373

square

#403CA3 #A33C6B #9FA33C #3CA373

split-complementary

#403CA3 #A3733C #6BA33C

monochromatic

#1D1B4A #2E2C76 #403CA3 #5E5AC2 #8A87D3

Accessibility & contrast

On white

8.77

#403CA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#403CA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CA3

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CA3	#FFFFFF	#000000	##FFFFFF
##403CA3	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA6

Deuteranopia (green-blind)

#0046A1

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403ca3;
/* rgb */ color: rgb(64, 60, 163);
/* oklch */ color: oklch(42.5% 0.161 278.8);

Tailwind

colors: {
  custom: {
    50: '#7f72bf',
    500: '#403ca3',
    950: '#000000',
  },
}

SCSS

$custom: #403ca3;
$custom-light: #7f72bf;
$custom-dark: #000000;

JSON

{
  "hex": "#403ca3",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 163
  },
  "hsl": {
    "h": 242.33,
    "s": 46.188,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42503,
    "c": 0.16095,
    "h": 278.8
  },
  "luminance": 0.06966
}

Semantic roles & 50–950 ramp

primary

#403CA3

secondary

#BBBD7E

accent

#D652D1

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403CA3

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

Preview Lab → · Contrast checker → · Palette generator →