#403CB1#403CB1

#403CB1 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.7% C 0.180 H 277.5°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#403CB1
RGB	rgb(64, 60, 177)
HSL	hsl(242, 49%, 46%)
HSV	hsv(242, 66%, 69%)
CMYK	cmyk(63.8%, 66.1%, 0%, 30.6%)
CIE-LAB	lab(32.91, 37.65, -61.75)
CIE-LCH	lch(32.91, 72.32, 301.38°)
OKLab	oklab(43.73% 0.0233 -0.178)
OKLCH	oklch(43.73% 0.18 277.5)
XYZ	xyz(11.6635, 7.4951, 42.4185)
Luminance	0.0750 (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

#403CB1 #ADB13C

analogous

#3C73B1 #403CB1 #7B3CB1

triadic

#403CB1 #B1403C #3CB140

tetradic

#403CB1 #B13C73 #ADB13C #3CB17B

square

#403CB1 #B13C73 #ADB13C #3CB17B

split-complementary

#403CB1 #B17B3C #73B13C

monochromatic

#1F1D56 #2F2D83 #403CB1 #6461C9 #918FD9

Accessibility & contrast

On white

8.40

#403CB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#403CB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CB1

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CB1	#FFFFFF	#000000	##FFFFFF
##403CB1	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	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: #403cb1;
/* rgb */ color: rgb(64, 60, 177);
/* oklch */ color: oklch(43.7% 0.180 277.5);

Tailwind

colors: {
  custom: {
    50: '#8272c9',
    500: '#403cb1',
    950: '#000000',
  },
}

SCSS

$custom: #403cb1;
$custom-light: #8272c9;
$custom-dark: #000000;

JSON

{
  "hex": "#403cb1",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 177
  },
  "hsl": {
    "h": 242.051,
    "s": 49.367,
    "l": 46.471
  },
  "oklch": {
    "l": 0.4373,
    "c": 0.17953,
    "h": 277.5
  },
  "luminance": 0.07496
}

Semantic roles & 50–950 ramp

primary

#403CB1

secondary

#C2C485

accent

#D94FD4

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403CB1

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

Preview Lab → · Contrast checker → · Palette generator →