#403EBB#403EBB

#403EBB is a dark, vivid blue. Relative luminance 0.081; OKLCH L 45.0% C 0.190 H 276.3°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#403EBB
RGB	rgb(64, 62, 187)
HSL	hsl(241, 50%, 49%)
HSV	hsv(241, 67%, 73%)
CMYK	cmyk(65.8%, 66.8%, 0%, 26.7%)
CIE-LAB	lab(34.24, 39.78, -65.49)
CIE-LCH	lch(34.24, 76.63, 301.27°)
OKLab	oklab(44.96% 0.0207 -0.189)
OKLCH	oklch(44.96% 0.19 276.3)
XYZ	xyz(12.8037, 8.1220, 47.8970)
Luminance	0.0812 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.37

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403EBB #B9BB3E

analogous

#3E7BBB #403EBB #7F3EBB

triadic

#403EBB #BB403E #3EBB40

tetradic

#403EBB #BB3E7B #B9BB3E #3EBB7F

square

#403EBB #BB3E7B #B9BB3E #3EBB7F

split-complementary

#403EBB #BB7F3E #7BBB3E

monochromatic

#21205F #302F8D #403EBB #6B69CD #9897DC

Accessibility & contrast

On white

8.00

#403EBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#403EBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EBB

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EBB	#FFFFFF	#000000	##FFFFFF
##403EBB	1.00	8.00	2.62	8.00
#FFFFFF	8.00	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BF

Deuteranopia (green-blind)

#004BB9

Tritanopia (blue-blind)

#005F77

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #403ebb;
/* rgb */ color: rgb(64, 62, 187);
/* oklch */ color: oklch(45.0% 0.190 276.3);

Tailwind

colors: {
  custom: {
    50: '#8474d1',
    500: '#403ebb',
    950: '#000000',
  },
}

SCSS

$custom: #403ebb;
$custom-light: #8474d1;
$custom-dark: #000000;

JSON

{
  "hex": "#403ebb",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 187
  },
  "hsl": {
    "h": 240.96,
    "s": 50.201,
    "l": 48.824
  },
  "oklch": {
    "l": 0.44963,
    "c": 0.19012,
    "h": 276.3
  },
  "luminance": 0.08123
}

Semantic roles & 50–950 ramp

primary

#403EBB

secondary

#C7C88D

accent

#DA4ED7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403EBB

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

Preview Lab → · Contrast checker → · Palette generator →