#40539C#40539C

#40539C is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.5% C 0.120 H 270.2°. Best body text is #FFFFFF at 7.15:1 contrast (WCAG AA passes).

Color values

HEX	#40539C
RGB	rgb(64, 83, 156)
HSL	hsl(228, 42%, 43%)
HSV	hsv(228, 59%, 61%)
CMYK	cmyk(59%, 46.8%, 0%, 38.8%)
CIE-LAB	lab(37.25, 15.63, -42.15)
CIE-LCH	lch(37.25, 44.95, 290.35°)
OKLab	oklab(46.48% 0.0004 -0.1202)
OKLCH	oklch(46.48% 0.12 270.2)
XYZ	xyz(11.2064, 9.6759, 32.7231)
Luminance	0.0968 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40539C #9C8940

analogous

#40819C #40539C #5B409C

triadic

#40539C #9C4053 #539C40

tetradic

#40539C #9C4081 #9C8940 #409C5B

square

#40539C #9C4081 #9C8940 #409C5B

split-complementary

#40539C #9C5B40 #819C40

monochromatic

#1C2545 #2E3C71 #40539C #5D71BC #8897CE

Accessibility & contrast

On white

7.15

#40539C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#40539C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40539C

7.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40539C	#FFFFFF	#000000	##FFFFFF
##40539C	1.00	7.15	2.94	7.15
#FFFFFF	7.15	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#315C9F

Deuteranopia (green-blind)

#24549A

Tritanopia (blue-blind)

#006370

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #40539c;
/* rgb */ color: rgb(64, 83, 156);
/* oklch */ color: oklch(46.5% 0.120 270.2);

Tailwind

colors: {
  custom: {
    50: '#7d83ba',
    500: '#40539c',
    950: '#000000',
  },
}

SCSS

$custom: #40539c;
$custom-light: #7d83ba;
$custom-dark: #000000;

JSON

{
  "hex": "#40539c",
  "rgb": {
    "r": 64,
    "g": 83,
    "b": 156
  },
  "hsl": {
    "h": 227.609,
    "s": 41.818,
    "l": 43.137
  },
  "oklch": {
    "l": 0.46481,
    "c": 0.1202,
    "h": 270.2
  },
  "luminance": 0.09677
}

Semantic roles & 50–950 ramp

primary

#40539C

secondary

#B9AD7F

accent

#B856D2

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#0A0A11

muted

#7C7C80

Preview Lab

Preview with #40539C

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

Preview Lab → · Contrast checker → · Palette generator →