#403FBA#403FBA

#403FBA is a mid, vivid blue. Relative luminance 0.082; OKLCH L 45.0% C 0.188 H 276.1°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#403FBA
RGB	rgb(64, 63, 186)
HSL	hsl(240, 49%, 49%)
HSV	hsv(240, 66%, 73%)
CMYK	cmyk(65.6%, 66.1%, 0%, 27.1%)
CIE-LAB	lab(34.37, 38.84, -64.68)
CIE-LCH	lch(34.37, 75.44, 300.98°)
OKLab	oklab(45.04% 0.0201 -0.1866)
OKLCH	oklch(45.04% 0.188 276.1)
XYZ	xyz(12.7519, 8.1891, 47.3535)
Luminance	0.0819 (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

#403FBA #B9BA3F

analogous

#3F7CBA #403FBA #7E3FBA

triadic

#403FBA #BA403F #3FBA40

tetradic

#403FBA #BA3F7C #B9BA3F #3FBA7E

square

#403FBA #BA3F7C #B9BA3F #3FBA7E

split-complementary

#403FBA #BA7E3F #7CBA3F

monochromatic

#21205F #30308C #403FBA #6B6ACC #9897DC

Accessibility & contrast

On white

7.96

#403FBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#403FBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FBA

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FBA	#FFFFFF	#000000	##FFFFFF
##403FBA	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BE

Deuteranopia (green-blind)

#004BB8

Tritanopia (blue-blind)

#005F77

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #403fba;
/* rgb */ color: rgb(64, 63, 186);
/* oklch */ color: oklch(45.0% 0.188 276.1);

Tailwind

colors: {
  custom: {
    50: '#8475d0',
    500: '#403fba',
    950: '#000000',
  },
}

SCSS

$custom: #403fba;
$custom-light: #8475d0;
$custom-dark: #000000;

JSON

{
  "hex": "#403fba",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 186
  },
  "hsl": {
    "h": 240.488,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.45036,
    "c": 0.18768,
    "h": 276.1
  },
  "luminance": 0.0819
}

Semantic roles & 50–950 ramp

primary

#403FBA

secondary

#C7C88D

accent

#D94FD8

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403FBA

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

Preview Lab → · Contrast checker → · Palette generator →