#4040D8#4040D8

#4040D8 is a mid, highly saturated blue. Relative luminance 0.097; OKLCH L 48.0% C 0.224 H 274.0°. Best body text is #FFFFFF at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#4040D8
RGB	rgb(64, 64, 216)
HSL	hsl(240, 66%, 55%)
HSV	hsv(240, 70%, 85%)
CMYK	cmyk(70.4%, 70.4%, 0%, 15.3%)
CIE-LAB	lab(37.32, 48.17, -77.30)
CIE-LCH	lch(37.32, 91.08, 301.93°)
OKLab	oklab(47.99% 0.0156 -0.2235)
OKLCH	oklch(47.99% 0.224 274)
XYZ	xyz(16.3383, 9.7131, 65.9662)
Luminance	0.0972 (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

#4040D8 #D8D840

analogous

#408CD8 #4040D8 #8C40D8

triadic

#4040D8 #D84040 #40D840

tetradic

#4040D8 #D8408C #D8D840 #40D88C

square

#4040D8 #D8408C #D8D840 #40D88C

split-complementary

#4040D8 #D88C40 #8CD840

monochromatic

#1B1B83 #2525B6 #4040D8 #7373E2 #A6A6ED

Accessibility & contrast

On white

7.14

#4040D8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#4040D8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4040D8

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4040D8	#FFFFFF	#000000	##FFFFFF
##4040D8	1.00	7.14	2.94	7.14
#FFFFFF	7.14	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FDD

Deuteranopia (green-blind)

#0051D5

Tritanopia (blue-blind)

#006A88

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #4040d8;
/* rgb */ color: rgb(64, 64, 216);
/* oklch */ color: oklch(48.0% 0.224 274.0);

Tailwind

colors: {
  custom: {
    50: '#8a76e5',
    500: '#4040d8',
    950: '#000000',
  },
}

SCSS

$custom: #4040d8;
$custom-light: #8a76e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4040d8",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 216
  },
  "hsl": {
    "h": 240,
    "s": 66.087,
    "l": 54.902
  },
  "oklch": {
    "l": 0.47994,
    "c": 0.22404,
    "h": 274
  },
  "luminance": 0.09715
}

Semantic roles & 50–950 ramp

primary

#4040D8

secondary

#DADA9A

accent

#E93FE9

background

#F9F7FE

surface

#F2EDFC

border

#CCC8D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #4040D8

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

Preview Lab → · Contrast checker → · Palette generator →