#403BB8#403BB8

#403BB8 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.2% C 0.190 H 277.1°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#403BB8
RGB	rgb(64, 59, 184)
HSL	hsl(242, 51%, 48%)
HSV	hsv(242, 68%, 72%)
CMYK	cmyk(65.2%, 67.9%, 0%, 27.8%)
CIE-LAB	lab(33.30, 40.58, -65.25)
CIE-LCH	lch(33.30, 76.84, 301.88°)
OKLab	oklab(44.21% 0.0233 -0.1883)
OKLCH	oklch(44.21% 0.19 277.1)
XYZ	xyz(12.3272, 7.6776, 46.1704)
Luminance	0.0768 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.65

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403BB8 #B3B83B

analogous

#3B74B8 #403BB8 #7E3BB8

triadic

#403BB8 #B8403B #3BB840

tetradic

#403BB8 #B83B74 #B3B83B #3BB87E

square

#403BB8 #B83B74 #B3B83B #3BB87E

split-complementary

#403BB8 #B87E3B #74B83B

monochromatic

#201D5B #302C8A #403BB8 #6763CD #9492DC

Accessibility & contrast

On white

8.28

#403BB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#403BB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BB8

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BB8	#FFFFFF	#000000	##FFFFFF
##403BB8	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BC

Deuteranopia (green-blind)

#0049B6

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403bb8;
/* rgb */ color: rgb(64, 59, 184);
/* oklch */ color: oklch(44.2% 0.190 277.1);

Tailwind

colors: {
  custom: {
    50: '#8472ce',
    500: '#403bb8',
    950: '#000000',
  },
}

SCSS

$custom: #403bb8;
$custom-light: #8472ce;
$custom-dark: #000000;

JSON

{
  "hex": "#403bb8",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 184
  },
  "hsl": {
    "h": 242.4,
    "s": 51.44,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44205,
    "c": 0.18972,
    "h": 277.1
  },
  "luminance": 0.07679
}

Semantic roles & 50–950 ramp

primary

#403BB8

secondary

#C4C788

accent

#DB4DD5

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403BB8

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

Preview Lab → · Contrast checker → · Palette generator →