#403BB7#403BB7

#403BB7 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.1% C 0.188 H 277.1°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#403BB7
RGB	rgb(64, 59, 183)
HSL	hsl(242, 51%, 47%)
HSV	hsv(242, 68%, 72%)
CMYK	cmyk(65%, 67.8%, 0%, 28.2%)
CIE-LAB	lab(33.21, 40.25, -64.81)
CIE-LCH	lch(33.21, 76.29, 301.84°)
OKLab	oklab(44.11% 0.0234 -0.187)
OKLCH	oklch(44.11% 0.188 277.1)
XYZ	xyz(12.2228, 7.6358, 45.6203)
Luminance	0.0764 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.64

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403BB7 #B2B73B

analogous

#3B74B7 #403BB7 #7E3BB7

triadic

#403BB7 #B7403B #3BB740

tetradic

#403BB7 #B73B74 #B2B73B #3BB77E

square

#403BB7 #B73B74 #B2B73B #3BB77E

split-complementary

#403BB7 #B77E3B #74B73B

monochromatic

#201D5A #302C89 #403BB7 #6763CD #9491DC

Accessibility & contrast

On white

8.31

#403BB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#403BB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BB7

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BB7	#FFFFFF	#000000	##FFFFFF
##403BB7	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BB

Deuteranopia (green-blind)

#0049B5

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403bb7;
/* rgb */ color: rgb(64, 59, 183);
/* oklch */ color: oklch(44.1% 0.188 277.1);

Tailwind

colors: {
  custom: {
    50: '#8372ce',
    500: '#403bb7',
    950: '#000000',
  },
}

SCSS

$custom: #403bb7;
$custom-light: #8372ce;
$custom-dark: #000000;

JSON

{
  "hex": "#403bb7",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 183
  },
  "hsl": {
    "h": 242.419,
    "s": 51.24,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44113,
    "c": 0.18845,
    "h": 277.1
  },
  "luminance": 0.07637
}

Semantic roles & 50–950 ramp

primary

#403BB7

secondary

#C4C687

accent

#DB4DD5

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403BB7

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

Preview Lab → · Contrast checker → · Palette generator →