#403BBB#403BBB

#403BBB is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.5% C 0.194 H 276.8°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#403BBB
RGB	rgb(64, 59, 187)
HSL	hsl(242, 52%, 48%)
HSV	hsv(242, 68%, 73%)
CMYK	cmyk(65.8%, 68.4%, 0%, 26.7%)
CIE-LAB	lab(33.57, 41.57, -66.58)
CIE-LCH	lch(33.57, 78.49, 301.98°)
OKLab	oklab(44.48% 0.0229 -0.1922)
OKLCH	oklch(44.48% 0.194 276.8)
XYZ	xyz(12.6450, 7.8047, 47.8442)
Luminance	0.0781 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.71

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403BBB #B6BB3B

analogous

#3B76BB #403BBB #803BBB

triadic

#403BBB #BB403B #3BBB40

tetradic

#403BBB #BB3B76 #B6BB3B #3BBB80

square

#403BBB #BB3B76 #B6BB3B #3BBB80

split-complementary

#403BBB #BB803B #76BB3B

monochromatic

#201E5E #302C8C #403BBB #6965CE #9693DD

Accessibility & contrast

On white

8.20

#403BBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#403BBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BBB

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BBB	#FFFFFF	#000000	##FFFFFF
##403BBB	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BF

Deuteranopia (green-blind)

#0049B9

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403bbb;
/* rgb */ color: rgb(64, 59, 187);
/* oklch */ color: oklch(44.5% 0.194 276.8);

Tailwind

colors: {
  custom: {
    50: '#8472d1',
    500: '#403bbb',
    950: '#000000',
  },
}

SCSS

$custom: #403bbb;
$custom-light: #8472d1;
$custom-dark: #000000;

JSON

{
  "hex": "#403bbb",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 187
  },
  "hsl": {
    "h": 242.344,
    "s": 52.033,
    "l": 48.235
  },
  "oklch": {
    "l": 0.44483,
    "c": 0.19353,
    "h": 276.8
  },
  "luminance": 0.07806
}

Semantic roles & 50–950 ramp

primary

#403BBB

secondary

#C6C88A

accent

#DB4CD6

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #403BBB

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

Preview Lab → · Contrast checker → · Palette generator →