#403DBA#403DBA

#403DBA is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.7% C 0.190 H 276.5°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#403DBA
RGB	rgb(64, 61, 186)
HSL	hsl(241, 51%, 48%)
HSV	hsv(241, 67%, 73%)
CMYK	cmyk(65.6%, 67.2%, 0%, 27.1%)
CIE-LAB	lab(33.92, 40.05, -65.41)
CIE-LCH	lch(33.92, 76.70, 301.48°)
OKLab	oklab(44.71% 0.0216 -0.1888)
OKLCH	oklch(44.71% 0.19 276.5)
XYZ	xyz(12.6431, 7.9716, 47.3172)
Luminance	0.0797 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.43

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403DBA #B7BA3D

analogous

#3D78BA #403DBA #7E3DBA

triadic

#403DBA #BA403D #3DBA40

tetradic

#403DBA #BA3D78 #B7BA3D #3DBA7E

square

#403DBA #BA3D78 #B7BA3D #3DBA7E

split-complementary

#403DBA #BA7E3D #78BA3D

monochromatic

#201F5E #302E8C #403DBA #6967CD #9795DC

Accessibility & contrast

On white

8.09

#403DBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#403DBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DBA

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DBA	#FFFFFF	#000000	##FFFFFF
##403DBA	1.00	8.09	2.59	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BE

Deuteranopia (green-blind)

#004AB8

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #403dba;
/* rgb */ color: rgb(64, 61, 186);
/* oklch */ color: oklch(44.7% 0.190 276.5);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#403dba",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 186
  },
  "hsl": {
    "h": 241.44,
    "s": 50.607,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44709,
    "c": 0.18999,
    "h": 276.5
  },
  "luminance": 0.07973
}

Semantic roles & 50–950 ramp

primary

#403DBA

secondary

#C6C88B

accent

#DA4ED7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403DBA

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

Preview Lab → · Contrast checker → · Palette generator →