#403BB1#403BB1

#403BB1 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.181 H 277.7°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#403BB1
RGB	rgb(64, 59, 177)
HSL	hsl(243, 50%, 46%)
HSV	hsv(243, 67%, 69%)
CMYK	cmyk(63.8%, 66.7%, 0%, 30.6%)
CIE-LAB	lab(32.68, 38.26, -62.12)
CIE-LCH	lch(32.68, 72.96, 301.63°)
OKLab	oklab(43.57% 0.0241 -0.1791)
OKLCH	oklch(43.57% 0.181 277.7)
XYZ	xyz(11.6116, 7.3913, 42.4012)
Luminance	0.0739 (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

#403BB1 #ACB13B

analogous

#3B71B1 #403BB1 #7B3BB1

triadic

#403BB1 #B1403B #3BB140

tetradic

#403BB1 #B13B71 #ACB13B #3BB17B

square

#403BB1 #B13B71 #ACB13B #3BB17B

split-complementary

#403BB1 #B17B3B #71B13B

monochromatic

#1F1C55 #2F2C83 #403BB1 #645FCA #918DD9

Accessibility & contrast

On white

8.47

#403BB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#403BB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BB1

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BB1	#FFFFFF	#000000	##FFFFFF
##403BB1	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B5

Deuteranopia (green-blind)

#0048AF

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403bb1;
/* rgb */ color: rgb(64, 59, 177);
/* oklch */ color: oklch(43.6% 0.181 277.7);

Tailwind

colors: {
  custom: {
    50: '#8272c9',
    500: '#403bb1',
    950: '#000000',
  },
}

SCSS

$custom: #403bb1;
$custom-light: #8272c9;
$custom-dark: #000000;

JSON

{
  "hex": "#403bb1",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 177
  },
  "hsl": {
    "h": 242.542,
    "s": 50,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43566,
    "c": 0.18072,
    "h": 277.7
  },
  "luminance": 0.07392
}

Semantic roles & 50–950 ramp

primary

#403BB1

secondary

#C1C484

accent

#DA4ED4

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403BB1

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

Preview Lab → · Contrast checker → · Palette generator →