#4043D9#4043D9

#4043D9 is a mid, highly saturated blue. Relative luminance 0.101; OKLCH L 48.5% C 0.222 H 273.5°. Best body text is #FFFFFF at 6.95:1 contrast (WCAG AA passes).

Color values

HEX	#4043D9
RGB	rgb(64, 67, 217)
HSL	hsl(239, 67%, 55%)
HSV	hsv(239, 71%, 85%)
CMYK	cmyk(70.5%, 69.1%, 0%, 14.9%)
CIE-LAB	lab(38.04, 46.77, -76.69)
CIE-LCH	lch(38.04, 89.82, 301.38°)
OKLab	oklab(48.54% 0.0137 -0.2217)
OKLCH	oklch(48.54% 0.222 273.5)
XYZ	xyz(16.6417, 10.1124, 66.7070)
Luminance	0.1011 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue (survey)

#0343DF

ΔE00 3.18

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4043D9 #D9D640

analogous

#408FD9 #4043D9 #8A40D9

triadic

#4043D9 #D94043 #43D940

tetradic

#4043D9 #D9408F #D9D640 #40D98A

square

#4043D9 #D9408F #D9D640 #40D98A

split-complementary

#4043D9 #D98A40 #8FD940

monochromatic

#1A1C84 #2427B7 #4043D9 #7375E3 #A6A7ED

Accessibility & contrast

On white

6.95

#4043D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#4043D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4043D9

6.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4043D9	#FFFFFF	#000000	##FFFFFF
##4043D9	1.00	6.95	3.02	6.95
#FFFFFF	6.95	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061DE

Deuteranopia (green-blind)

#0052D6

Tritanopia (blue-blind)

#006C89

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #4043d9;
/* rgb */ color: rgb(64, 67, 217);
/* oklch */ color: oklch(48.5% 0.222 273.5);

Tailwind

colors: {
  custom: {
    50: '#8a78e6',
    500: '#4043d9',
    950: '#000000',
  },
}

SCSS

$custom: #4043d9;
$custom-light: #8a78e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4043d9",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 217
  },
  "hsl": {
    "h": 238.824,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.4854,
    "c": 0.22214,
    "h": 273.5
  },
  "luminance": 0.10114
}

Semantic roles & 50–950 ramp

primary

#4043D9

secondary

#DAD99A

accent

#E63EEA

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #4043D9

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

Preview Lab → · Contrast checker → · Palette generator →