#4040DA#4040DA

#4040DA is a mid, highly saturated blue. Relative luminance 0.098; OKLCH L 48.2% C 0.226 H 273.9°. Best body text is #FFFFFF at 7.09:1 contrast (WCAG AA passes).

Color values

HEX	#4040DA
RGB	rgb(64, 64, 218)
HSL	hsl(240, 68%, 55%)
HSV	hsv(240, 71%, 85%)
CMYK	cmyk(70.6%, 70.6%, 0%, 14.5%)
CIE-LAB	lab(37.51, 48.82, -78.13)
CIE-LCH	lch(37.51, 92.13, 302.00°)
OKLab	oklab(48.19% 0.0153 -0.2259)
OKLCH	oklch(48.19% 0.226 273.9)
XYZ	xyz(16.5984, 9.8171, 67.3362)
Luminance	0.0982 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue (survey)

#0343DF

ΔE00 3.40

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4040DA #DADA40

analogous

#408DDA #4040DA #8D40DA

triadic

#4040DA #DA4040 #40DA40

tetradic

#4040DA #DA408D #DADA40 #40DA8D

square

#4040DA #DA408D #DADA40 #40DA8D

split-complementary

#4040DA #DA8D40 #8DDA40

monochromatic

#1A1A86 #2424B9 #4040DA #7373E4 #A7A7EE

Accessibility & contrast

On white

7.09

#4040DA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#4040DA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4040DA

7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4040DA	#FFFFFF	#000000	##FFFFFF
##4040DA	1.00	7.09	2.96	7.09
#FFFFFF	7.09	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060DF

Deuteranopia (green-blind)

#0051D7

Tritanopia (blue-blind)

#006B89

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #4040da;
/* rgb */ color: rgb(64, 64, 218);
/* oklch */ color: oklch(48.2% 0.226 273.9);

Tailwind

colors: {
  custom: {
    50: '#8a76e7',
    500: '#4040da',
    950: '#000000',
  },
}

SCSS

$custom: #4040da;
$custom-light: #8a76e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4040da",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 218
  },
  "hsl": {
    "h": 240,
    "s": 67.544,
    "l": 55.294
  },
  "oklch": {
    "l": 0.48187,
    "c": 0.22646,
    "h": 273.9
  },
  "luminance": 0.09819
}

Semantic roles & 50–950 ramp

primary

#4040DA

secondary

#DBDB9B

accent

#EA3DEA

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #4040DA

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

Preview Lab → · Contrast checker → · Palette generator →