#403FBE#403FBE

#403FBE is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.4% C 0.193 H 275.8°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#403FBE
RGB	rgb(64, 63, 190)
HSL	hsl(240, 50%, 50%)
HSV	hsv(240, 67%, 75%)
CMYK	cmyk(66.3%, 66.8%, 0%, 25.5%)
CIE-LAB	lab(34.72, 40.18, -66.46)
CIE-LCH	lch(34.72, 77.66, 301.16°)
OKLab	oklab(45.4% 0.0196 -0.1918)
OKLCH	oklch(45.4% 0.193 275.8)
XYZ	xyz(13.1831, 8.3616, 49.6244)
Luminance	0.0836 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.44

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403FBE #BDBE3F

analogous

#3F7EBE #403FBE #7F3FBE

triadic

#403FBE #BE403F #3FBE40

tetradic

#403FBE #BE3F7E #BDBE3F #3FBE7F

square

#403FBE #BE3F7E #BDBE3F #3FBE7F

split-complementary

#403FBE #BE7F3F #7EBE3F

monochromatic

#212162 #313090 #403FBE #6D6CCE #9A9ADD

Accessibility & contrast

On white

7.86

#403FBE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#403FBE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FBE

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FBE	#FFFFFF	#000000	##FFFFFF
##403FBE	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C2

Deuteranopia (green-blind)

#004CBC

Tritanopia (blue-blind)

#006079

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #403fbe;
/* rgb */ color: rgb(64, 63, 190);
/* oklch */ color: oklch(45.4% 0.193 275.8);

Tailwind

colors: {
  custom: {
    50: '#8475d3',
    500: '#403fbe',
    950: '#000000',
  },
}

SCSS

$custom: #403fbe;
$custom-light: #8475d3;
$custom-dark: #000000;

JSON

{
  "hex": "#403fbe",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 190
  },
  "hsl": {
    "h": 240.472,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.45398,
    "c": 0.19281,
    "h": 275.8
  },
  "luminance": 0.08363
}

Semantic roles & 50–950 ramp

primary

#403FBE

secondary

#C9C98F

accent

#DA4ED9

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #403FBE

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

Preview Lab → · Contrast checker → · Palette generator →