#403CB2#403CB2

#403CB2 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.8% C 0.181 H 277.4°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#403CB2
RGB	rgb(64, 60, 178)
HSL	hsl(242, 50%, 47%)
HSV	hsv(242, 66%, 70%)
CMYK	cmyk(64%, 66.3%, 0%, 30.2%)
CIE-LAB	lab(33.00, 37.99, -62.20)
CIE-LCH	lch(33.00, 72.88, 301.41°)
OKLab	oklab(43.82% 0.0232 -0.1793)
OKLCH	oklch(43.82% 0.181 277.4)
XYZ	xyz(11.7635, 7.5351, 42.9454)
Luminance	0.0754 (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

#403CB2 #AEB23C

analogous

#3C73B2 #403CB2 #7B3CB2

triadic

#403CB2 #B2403C #3CB240

tetradic

#403CB2 #B23C73 #AEB23C #3CB27B

square

#403CB2 #B23C73 #AEB23C #3CB27B

split-complementary

#403CB2 #B27B3C #73B23C

monochromatic

#1F1D56 #302D84 #403CB2 #6561CA #928FD9

Accessibility & contrast

On white

8.38

#403CB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#403CB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CB2

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CB2	#FFFFFF	#000000	##FFFFFF
##403CB2	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B6

Deuteranopia (green-blind)

#0049B0

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403cb2;
/* rgb */ color: rgb(64, 60, 178);
/* oklch */ color: oklch(43.8% 0.181 277.4);

Tailwind

colors: {
  custom: {
    50: '#8272ca',
    500: '#403cb2',
    950: '#000000',
  },
}

SCSS

$custom: #403cb2;
$custom-light: #8272ca;
$custom-dark: #000000;

JSON

{
  "hex": "#403cb2",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 178
  },
  "hsl": {
    "h": 242.034,
    "s": 49.58,
    "l": 46.667
  },
  "oklch": {
    "l": 0.4382,
    "c": 0.18084,
    "h": 277.4
  },
  "luminance": 0.07536
}

Semantic roles & 50–950 ramp

primary

#403CB2

secondary

#C2C486

accent

#D94FD4

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403CB2

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

Preview Lab → · Contrast checker → · Palette generator →