#403EA8#403EA8

#403EA8 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.3% C 0.165 H 277.8°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#403EA8
RGB	rgb(64, 62, 168)
HSL	hsl(241, 46%, 45%)
HSV	hsv(241, 63%, 66%)
CMYK	cmyk(61.9%, 63.1%, 0%, 34.1%)
CIE-LAB	lab(32.62, 33.39, -56.85)
CIE-LCH	lch(32.62, 65.93, 300.43°)
OKLab	oklab(43.28% 0.0224 -0.1636)
OKLCH	oklch(43.28% 0.165 277.8)
XYZ	xyz(10.9026, 7.3616, 37.8846)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.27

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403EA8 #A6A83E

analogous

#3E71A8 #403EA8 #753EA8

triadic

#403EA8 #A8403E #3EA840

tetradic

#403EA8 #A83E71 #A6A83E #3EA875

square

#403EA8 #A83E71 #A6A83E #3EA875

split-complementary

#403EA8 #A8753E #71A83E

monochromatic

#1E1D4F #2F2E7B #403EA8 #615FC4 #8D8CD5

Accessibility & contrast

On white

8.49

#403EA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#403EA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EA8

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EA8	#FFFFFF	#000000	##FFFFFF
##403EA8	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AB

Deuteranopia (green-blind)

#0048A6

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403ea8;
/* rgb */ color: rgb(64, 62, 168);
/* oklch */ color: oklch(43.3% 0.165 277.8);

Tailwind

colors: {
  custom: {
    50: '#8073c3',
    500: '#403ea8',
    950: '#000000',
  },
}

SCSS

$custom: #403ea8;
$custom-light: #8073c3;
$custom-dark: #000000;

JSON

{
  "hex": "#403ea8",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 168
  },
  "hsl": {
    "h": 241.132,
    "s": 46.087,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43282,
    "c": 0.16516,
    "h": 277.8
  },
  "luminance": 0.07362
}

Semantic roles & 50–950 ramp

primary

#403EA8

secondary

#BEBF83

accent

#D652D3

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403EA8

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

Preview Lab → · Contrast checker → · Palette generator →