#403CB4#403CB4

#403CB4 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.0% C 0.183 H 277.2°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#403CB4
RGB	rgb(64, 60, 180)
HSL	hsl(242, 50%, 47%)
HSV	hsv(242, 67%, 71%)
CMYK	cmyk(64.4%, 66.7%, 0%, 29.4%)
CIE-LAB	lab(33.17, 38.65, -63.10)
CIE-LCH	lch(33.17, 74.00, 301.49°)
OKLab	oklab(44% 0.023 -0.182)
OKLCH	oklch(44% 0.183 277.2)
XYZ	xyz(11.9658, 7.6160, 44.0106)
Luminance	0.0762 (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

#403CB4 #B0B43C

analogous

#3C74B4 #403CB4 #7C3CB4

triadic

#403CB4 #B4403C #3CB440

tetradic

#403CB4 #B43C74 #B0B43C #3CB47C

square

#403CB4 #B43C74 #B0B43C #3CB47C

split-complementary

#403CB4 #B47C3C #74B43C

monochromatic

#1F1D58 #302D86 #403CB4 #6662CB #9390DA

Accessibility & contrast

On white

8.32

#403CB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#403CB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CB4

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CB4	#FFFFFF	#000000	##FFFFFF
##403CB4	1.00	8.32	2.52	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B8

Deuteranopia (green-blind)

#0049B2

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403cb4;
/* rgb */ color: rgb(64, 60, 180);
/* oklch */ color: oklch(44.0% 0.183 277.2);

Tailwind

colors: {
  custom: {
    50: '#8372cb',
    500: '#403cb4',
    950: '#000000',
  },
}

SCSS

$custom: #403cb4;
$custom-light: #8372cb;
$custom-dark: #000000;

JSON

{
  "hex": "#403cb4",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 180
  },
  "hsl": {
    "h": 242,
    "s": 50,
    "l": 47.059
  },
  "oklch": {
    "l": 0.44001,
    "c": 0.18343,
    "h": 277.2
  },
  "luminance": 0.07617
}

Semantic roles & 50–950 ramp

primary

#403CB4

secondary

#C3C587

accent

#DA4ED5

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403CB4

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

Preview Lab → · Contrast checker → · Palette generator →