#403BB0#403BB0

#403BB0 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.5% C 0.179 H 277.8°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#403BB0
RGB	rgb(64, 59, 176)
HSL	hsl(243, 50%, 46%)
HSV	hsv(243, 66%, 69%)
CMYK	cmyk(63.6%, 66.5%, 0%, 31%)
CIE-LAB	lab(32.59, 37.93, -61.66)
CIE-LCH	lch(32.59, 72.40, 301.60°)
OKLab	oklab(43.48% 0.0243 -0.1778)
OKLCH	oklch(43.48% 0.179 277.8)
XYZ	xyz(11.5123, 7.3516, 41.8782)
Luminance	0.0735 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403BB0 #ABB03B

analogous

#3B70B0 #403BB0 #7A3BB0

triadic

#403BB0 #B0403B #3BB040

tetradic

#403BB0 #B03B70 #ABB03B #3BB07A

square

#403BB0 #B03B70 #ABB03B #3BB07A

split-complementary

#403BB0 #B07A3B #70B03B

monochromatic

#1F1C54 #2F2C82 #403BB0 #635FC9 #908DD9

Accessibility & contrast

On white

8.50

#403BB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#403BB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BB0

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BB0	#FFFFFF	#000000	##FFFFFF
##403BB0	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B4

Deuteranopia (green-blind)

#0048AE

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403bb0;
/* rgb */ color: rgb(64, 59, 176);
/* oklch */ color: oklch(43.5% 0.179 277.8);

Tailwind

colors: {
  custom: {
    50: '#8272c9',
    500: '#403bb0',
    950: '#000000',
  },
}

SCSS

$custom: #403bb0;
$custom-light: #8272c9;
$custom-dark: #000000;

JSON

{
  "hex": "#403bb0",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 176
  },
  "hsl": {
    "h": 242.564,
    "s": 49.787,
    "l": 46.078
  },
  "oklch": {
    "l": 0.43476,
    "c": 0.17943,
    "h": 277.8
  },
  "luminance": 0.07353
}

Semantic roles & 50–950 ramp

primary

#403BB0

secondary

#C1C383

accent

#D94ED3

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403BB0

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

Preview Lab → · Contrast checker → · Palette generator →