#403FC0#403FC0

#403FC0 is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.6% C 0.195 H 275.7°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#403FC0
RGB	rgb(64, 63, 192)
HSL	hsl(240, 51%, 50%)
HSV	hsv(240, 67%, 75%)
CMYK	cmyk(66.7%, 67.2%, 0%, 24.7%)
CIE-LAB	lab(34.90, 40.85, -67.34)
CIE-LCH	lch(34.90, 78.76, 301.24°)
OKLab	oklab(45.58% 0.0194 -0.1944)
OKLCH	oklch(45.58% 0.195 275.7)
XYZ	xyz(13.4032, 8.4496, 50.7836)
Luminance	0.0845 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.56

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403FC0 #BFC03F

analogous

#3F7FC0 #403FC0 #803FC0

triadic

#403FC0 #C0403F #3FC040

tetradic

#403FC0 #C03F7F #BFC03F #3FC080

square

#403FC0 #C03F7F #BFC03F #3FC080

split-complementary

#403FC0 #C0803F #7FC03F

monochromatic

#212164 #313092 #403FC0 #6E6DCF #9C9BDE

Accessibility & contrast

On white

7.81

#403FC0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#403FC0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FC0

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FC0	#FFFFFF	#000000	##FFFFFF
##403FC0	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C4

Deuteranopia (green-blind)

#004CBE

Tritanopia (blue-blind)

#00617A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #403fc0;
/* rgb */ color: rgb(64, 63, 192);
/* oklch */ color: oklch(45.6% 0.195 275.7);

Tailwind

colors: {
  custom: {
    50: '#8575d4',
    500: '#403fc0',
    950: '#000000',
  },
}

SCSS

$custom: #403fc0;
$custom-light: #8575d4;
$custom-dark: #000000;

JSON

{
  "hex": "#403fc0",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 192
  },
  "hsl": {
    "h": 240.465,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.45581,
    "c": 0.19536,
    "h": 275.7
  },
  "luminance": 0.08451
}

Semantic roles & 50–950 ramp

primary

#403FC0

secondary

#CACA91

accent

#DA4ED9

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #403FC0

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

Preview Lab → · Contrast checker → · Palette generator →