#4043D8#4043D8

#4043D8 is a mid, highly saturated blue. Relative luminance 0.101; OKLCH L 48.4% C 0.221 H 273.6°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#4043D8
RGB	rgb(64, 67, 216)
HSL	hsl(239, 66%, 55%)
HSV	hsv(239, 70%, 85%)
CMYK	cmyk(70.4%, 69%, 0%, 15.3%)
CIE-LAB	lab(37.95, 46.44, -76.26)
CIE-LCH	lch(37.95, 89.29, 301.34°)
OKLab	oklab(48.45% 0.0139 -0.2205)
OKLCH	oklch(48.45% 0.221 273.6)
XYZ	xyz(16.5120, 10.0606, 66.0241)
Luminance	0.1006 (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

#4043D8 #D8D540

analogous

#408FD8 #4043D8 #8940D8

triadic

#4043D8 #D84043 #43D840

tetradic

#4043D8 #D8408F #D8D540 #40D889

square

#4043D8 #D8408F #D8D540 #40D889

split-complementary

#4043D8 #D88940 #8FD840

monochromatic

#1B1D83 #2528B6 #4043D8 #7375E2 #A6A7ED

Accessibility & contrast

On white

6.97

#4043D8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#4043D8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4043D8

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4043D8	#FFFFFF	#000000	##FFFFFF
##4043D8	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060DD

Deuteranopia (green-blind)

#0052D5

Tritanopia (blue-blind)

#006C88

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #4043d8;
/* rgb */ color: rgb(64, 67, 216);
/* oklch */ color: oklch(48.4% 0.221 273.6);

Tailwind

colors: {
  custom: {
    50: '#8a78e5',
    500: '#4043d8',
    950: '#000000',
  },
}

SCSS

$custom: #4043d8;
$custom-light: #8a78e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4043d8",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 216
  },
  "hsl": {
    "h": 238.816,
    "s": 66.087,
    "l": 54.902
  },
  "oklch": {
    "l": 0.48446,
    "c": 0.22092,
    "h": 273.6
  },
  "luminance": 0.10062
}

Semantic roles & 50–950 ramp

primary

#4043D8

secondary

#DAD99A

accent

#E63FE9

background

#F9F7FE

surface

#F2EDFC

border

#CCC8D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #4043D8

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

Preview Lab → · Contrast checker → · Palette generator →