#403CA6#403CA6

#403CA6 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.165 H 278.5°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#403CA6
RGB	rgb(64, 60, 166)
HSL	hsl(242, 47%, 44%)
HSV	hsv(242, 64%, 65%)
CMYK	cmyk(61.4%, 63.9%, 0%, 34.9%)
CIE-LAB	lab(31.98, 33.97, -56.69)
CIE-LCH	lch(31.98, 66.09, 300.93°)
OKLab	oklab(42.76% 0.0244 -0.1632)
OKLCH	oklch(42.76% 0.165 278.5)
XYZ	xyz(10.6109, 7.0741, 36.8753)
Luminance	0.0707 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403CA6 #A2A63C

analogous

#3C6DA6 #403CA6 #753CA6

triadic

#403CA6 #A6403C #3CA640

tetradic

#403CA6 #A63C6D #A2A63C #3CA675

square

#403CA6 #A63C6D #A2A63C #3CA675

split-complementary

#403CA6 #A6753C #6DA63C

monochromatic

#1D1C4C #2F2C79 #403CA6 #5F5BC4 #8B88D4

Accessibility & contrast

On white

8.70

#403CA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#403CA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CA6

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CA6	#FFFFFF	#000000	##FFFFFF
##403CA6	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A9

Deuteranopia (green-blind)

#0047A4

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403ca6;
/* rgb */ color: rgb(64, 60, 166);
/* oklch */ color: oklch(42.8% 0.165 278.5);

Tailwind

colors: {
  custom: {
    50: '#8072c1',
    500: '#403ca6',
    950: '#000000',
  },
}

SCSS

$custom: #403ca6;
$custom-light: #8072c1;
$custom-dark: #000000;

JSON

{
  "hex": "#403ca6",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 166
  },
  "hsl": {
    "h": 242.264,
    "s": 46.903,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42761,
    "c": 0.165,
    "h": 278.5
  },
  "luminance": 0.07075
}

Semantic roles & 50–950 ramp

primary

#403CA6

secondary

#BCBE7F

accent

#D751D2

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403CA6

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

Preview Lab → · Contrast checker → · Palette generator →