#403CB6#403CB6

#403CB6 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.2% C 0.186 H 277.0°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#403CB6
RGB	rgb(64, 60, 182)
HSL	hsl(242, 50%, 47%)
HSV	hsv(242, 67%, 71%)
CMYK	cmyk(64.8%, 67%, 0%, 28.6%)
CIE-LAB	lab(33.35, 39.32, -64.00)
CIE-LCH	lch(33.35, 75.11, 301.57°)
OKLab	oklab(44.18% 0.0228 -0.1846)
OKLCH	oklch(44.18% 0.186 277)
XYZ	xyz(12.1710, 7.6981, 45.0914)
Luminance	0.0770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.50

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403CB6 #B2B63C

analogous

#3C75B6 #403CB6 #7D3CB6

triadic

#403CB6 #B6403C #3CB640

tetradic

#403CB6 #B63C75 #B2B63C #3CB67D

square

#403CB6 #B63C75 #B2B63C #3CB67D

split-complementary

#403CB6 #B67D3C #75B63C

monochromatic

#201E5A #302D88 #403CB6 #6763CC #9491DB

Accessibility & contrast

On white

8.27

#403CB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#403CB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CB6

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CB6	#FFFFFF	#000000	##FFFFFF
##403CB6	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BA

Deuteranopia (green-blind)

#0049B4

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403cb6;
/* rgb */ color: rgb(64, 60, 182);
/* oklch */ color: oklch(44.2% 0.186 277.0);

Tailwind

colors: {
  custom: {
    50: '#8372cd',
    500: '#403cb6',
    950: '#000000',
  },
}

SCSS

$custom: #403cb6;
$custom-light: #8372cd;
$custom-dark: #000000;

JSON

{
  "hex": "#403cb6",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 182
  },
  "hsl": {
    "h": 241.967,
    "s": 50.413,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44183,
    "c": 0.18601,
    "h": 277
  },
  "luminance": 0.07699
}

Semantic roles & 50–950 ramp

primary

#403CB6

secondary

#C4C688

accent

#DA4ED5

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403CB6

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

Preview Lab → · Contrast checker → · Palette generator →