#403AB7#403AB7

#403AB7 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 44.0% C 0.190 H 277.3°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#403AB7
RGB	rgb(64, 58, 183)
HSL	hsl(243, 52%, 47%)
HSV	hsv(243, 68%, 72%)
CMYK	cmyk(65%, 68.3%, 0%, 28.2%)
CIE-LAB	lab(32.99, 40.85, -65.17)
CIE-LCH	lch(32.99, 76.91, 302.08°)
OKLab	oklab(43.96% 0.0242 -0.188)
OKLCH	oklch(43.96% 0.19 277.3)
XYZ	xyz(12.1719, 7.5340, 45.6033)
Luminance	0.0754 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.80

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403AB7 #B1B73A

analogous

#3A73B7 #403AB7 #7F3AB7

triadic

#403AB7 #B7403A #3AB740

tetradic

#403AB7 #B73A73 #B1B73A #3AB77F

square

#403AB7 #B73A73 #B1B73A #3AB77F

split-complementary

#403AB7 #B77F3A #73B73A

monochromatic

#1F1D5A #302B89 #403AB7 #6661CD #9390DC

Accessibility & contrast

On white

8.38

#403AB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#403AB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403AB7

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403AB7	#FFFFFF	#000000	##FFFFFF
##403AB7	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BB

Deuteranopia (green-blind)

#0048B5

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403ab7;
/* rgb */ color: rgb(64, 58, 183);
/* oklch */ color: oklch(44.0% 0.190 277.3);

Tailwind

colors: {
  custom: {
    50: '#8371ce',
    500: '#403ab7',
    950: '#000000',
  },
}

SCSS

$custom: #403ab7;
$custom-light: #8371ce;
$custom-dark: #000000;

JSON

{
  "hex": "#403ab7",
  "rgb": {
    "r": 64,
    "g": 58,
    "b": 183
  },
  "hsl": {
    "h": 242.88,
    "s": 51.867,
    "l": 47.255
  },
  "oklch": {
    "l": 0.43955,
    "c": 0.18959,
    "h": 277.3
  },
  "luminance": 0.07535
}

Semantic roles & 50–950 ramp

primary

#403AB7

secondary

#C3C786

accent

#DB4CD4

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403AB7

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

Preview Lab → · Contrast checker → · Palette generator →