#403CB9#403CB9

#403CB9 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.5% C 0.190 H 276.8°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#403CB9
RGB	rgb(64, 60, 185)
HSL	hsl(242, 51%, 48%)
HSV	hsv(242, 68%, 73%)
CMYK	cmyk(65.4%, 67.6%, 0%, 27.5%)
CIE-LAB	lab(33.61, 40.32, -65.33)
CIE-LCH	lch(33.61, 76.77, 301.68°)
OKLab	oklab(44.46% 0.0224 -0.1885)
OKLCH	oklch(44.46% 0.19 276.8)
XYZ	xyz(12.4843, 7.8234, 46.7417)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.53

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403CB9 #B5B93C

analogous

#3C76B9 #403CB9 #7E3CB9

triadic

#403CB9 #B9403C #3CB940

tetradic

#403CB9 #B93C76 #B5B93C #3CB97E

square

#403CB9 #B93C76 #B5B93C #3CB97E

split-complementary

#403CB9 #B97E3C #76B93C

monochromatic

#201E5D #302D8B #403CB9 #6865CD #9693DC

Accessibility & contrast

On white

8.19

#403CB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#403CB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CB9

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CB9	#FFFFFF	#000000	##FFFFFF
##403CB9	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BD

Deuteranopia (green-blind)

#004AB7

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403cb9;
/* rgb */ color: rgb(64, 60, 185);
/* oklch */ color: oklch(44.5% 0.190 276.8);

Tailwind

colors: {
  custom: {
    50: '#8472cf',
    500: '#403cb9',
    950: '#000000',
  },
}

SCSS

$custom: #403cb9;
$custom-light: #8472cf;
$custom-dark: #000000;

JSON

{
  "hex": "#403cb9",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 185
  },
  "hsl": {
    "h": 241.92,
    "s": 51.02,
    "l": 48.039
  },
  "oklch": {
    "l": 0.44457,
    "c": 0.18986,
    "h": 276.8
  },
  "luminance": 0.07824
}

Semantic roles & 50–950 ramp

primary

#403CB9

secondary

#C5C789

accent

#DA4DD6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403CB9

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

Preview Lab → · Contrast checker → · Palette generator →