#4040D9#4040D9

#4040D9 is a mid, highly saturated blue. Relative luminance 0.098; OKLCH L 48.1% C 0.225 H 273.9°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#4040D9
RGB	rgb(64, 64, 217)
HSL	hsl(240, 67%, 55%)
HSV	hsv(240, 71%, 85%)
CMYK	cmyk(70.5%, 70.5%, 0%, 14.9%)
CIE-LAB	lab(37.42, 48.50, -77.72)
CIE-LCH	lch(37.42, 91.61, 301.97°)
OKLab	oklab(48.09% 0.0154 -0.2247)
OKLCH	oklch(48.09% 0.225 273.9)
XYZ	xyz(16.4680, 9.7649, 66.6491)
Luminance	0.0977 (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

#4040D9 #D9D940

analogous

#408CD9 #4040D9 #8C40D9

triadic

#4040D9 #D94040 #40D940

tetradic

#4040D9 #D9408C #D9D940 #40D98C

square

#4040D9 #D9408C #D9D940 #40D98C

split-complementary

#4040D9 #D98C40 #8CD940

monochromatic

#1A1A84 #2424B7 #4040D9 #7373E3 #A6A6ED

Accessibility & contrast

On white

7.11

#4040D9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#4040D9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4040D9

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4040D9	#FFFFFF	#000000	##FFFFFF
##4040D9	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FDE

Deuteranopia (green-blind)

#0051D6

Tritanopia (blue-blind)

#006B88

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #4040d9;
/* rgb */ color: rgb(64, 64, 217);
/* oklch */ color: oklch(48.1% 0.225 273.9);

Tailwind

colors: {
  custom: {
    50: '#8a76e6',
    500: '#4040d9',
    950: '#000000',
  },
}

SCSS

$custom: #4040d9;
$custom-light: #8a76e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4040d9",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 217
  },
  "hsl": {
    "h": 240,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.48091,
    "c": 0.22525,
    "h": 273.9
  },
  "luminance": 0.09767
}

Semantic roles & 50–950 ramp

primary

#4040D9

secondary

#DADA9A

accent

#EA3EEA

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #4040D9

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

Preview Lab → · Contrast checker → · Palette generator →