#403CBA#403CBA

#403CBA is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.5% C 0.191 H 276.7°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#403CBA
RGB	rgb(64, 60, 186)
HSL	hsl(242, 51%, 48%)
HSV	hsv(242, 68%, 73%)
CMYK	cmyk(65.6%, 67.7%, 0%, 27.1%)
CIE-LAB	lab(33.70, 40.65, -65.78)
CIE-LCH	lch(33.70, 77.32, 301.71°)
OKLab	oklab(44.55% 0.0223 -0.1898)
OKLCH	oklch(44.55% 0.191 276.7)
XYZ	xyz(12.5902, 7.8658, 47.2996)
Luminance	0.0787 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.55

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403CBA #B6BA3C

analogous

#3C77BA #403CBA #7F3CBA

triadic

#403CBA #BA403C #3CBA40

tetradic

#403CBA #BA3C77 #B6BA3C #3CBA7F

square

#403CBA #BA3C77 #B6BA3C #3CBA7F

split-complementary

#403CBA #BA7F3C #77BA3C

monochromatic

#201E5D #302D8C #403CBA #6966CE #9694DC

Accessibility & contrast

On white

8.16

#403CBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#403CBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CBA

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CBA	#FFFFFF	#000000	##FFFFFF
##403CBA	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BE

Deuteranopia (green-blind)

#004AB8

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403cba;
/* rgb */ color: rgb(64, 60, 186);
/* oklch */ color: oklch(44.5% 0.191 276.7);

Tailwind

colors: {
  custom: {
    50: '#8473d0',
    500: '#403cba',
    950: '#000000',
  },
}

SCSS

$custom: #403cba;
$custom-light: #8473d0;
$custom-dark: #000000;

JSON

{
  "hex": "#403cba",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 186
  },
  "hsl": {
    "h": 241.905,
    "s": 51.22,
    "l": 48.235
  },
  "oklch": {
    "l": 0.44549,
    "c": 0.19114,
    "h": 276.7
  },
  "luminance": 0.07867
}

Semantic roles & 50–950 ramp

primary

#403CBA

secondary

#C6C88A

accent

#DB4DD6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403CBA

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

Preview Lab → · Contrast checker → · Palette generator →