#403CBB#403CBB

#403CBB is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.6% C 0.192 H 276.6°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#403CBB
RGB	rgb(64, 60, 187)
HSL	hsl(242, 51%, 48%)
HSV	hsv(242, 68%, 73%)
CMYK	cmyk(65.8%, 67.9%, 0%, 26.7%)
CIE-LAB	lab(33.79, 40.98, -66.22)
CIE-LCH	lch(33.79, 77.87, 301.75°)
OKLab	oklab(44.64% 0.0222 -0.1911)
OKLCH	oklch(44.64% 0.192 276.6)
XYZ	xyz(12.6969, 7.9085, 47.8615)
Luminance	0.0791 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.58

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403CBB #B7BB3C

analogous

#3C77BB #403CBB #7F3CBB

triadic

#403CBB #BB403C #3CBB40

tetradic

#403CBB #BB3C77 #B7BB3C #3CBB7F

square

#403CBB #BB3C77 #B7BB3C #3CBB7F

split-complementary

#403CBB #BB7F3C #77BB3C

monochromatic

#201E5E #302D8D #403CBB #6966CE #9795DD

Accessibility & contrast

On white

8.13

#403CBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#403CBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CBB

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CBB	#FFFFFF	#000000	##FFFFFF
##403CBB	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BF

Deuteranopia (green-blind)

#004AB9

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403cbb;
/* rgb */ color: rgb(64, 60, 187);
/* oklch */ color: oklch(44.6% 0.192 276.6);

Tailwind

colors: {
  custom: {
    50: '#8473d1',
    500: '#403cbb',
    950: '#000000',
  },
}

SCSS

$custom: #403cbb;
$custom-light: #8473d1;
$custom-dark: #000000;

JSON

{
  "hex": "#403cbb",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 187
  },
  "hsl": {
    "h": 241.89,
    "s": 51.417,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44641,
    "c": 0.1924,
    "h": 276.6
  },
  "luminance": 0.0791
}

Semantic roles & 50–950 ramp

primary

#403CBB

secondary

#C6C88B

accent

#DB4DD6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403CBB

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

Preview Lab → · Contrast checker → · Palette generator →