#4043E3#4043E3

#4043E3 is a mid, highly saturated blue. Relative luminance 0.106; OKLCH L 49.5% C 0.234 H 273.0°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#4043E3
RGB	rgb(64, 67, 227)
HSL	hsl(239, 74%, 57%)
HSV	hsv(239, 72%, 89%)
CMYK	cmyk(71.8%, 70.5%, 0%, 11%)
CIE-LAB	lab(38.98, 50.04, -80.86)
CIE-LCH	lch(38.98, 95.09, 301.75°)
OKLab	oklab(49.5% 0.0123 -0.2339)
OKLCH	oklch(49.5% 0.234 273)
XYZ	xyz(17.9820, 10.6485, 73.7658)
Luminance	0.1065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 4.57

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4043E3 #E3E040

analogous

#4094E3 #4043E3 #8F40E3

triadic

#4043E3 #E34043 #43E340

tetradic

#4043E3 #E34094 #E3E040 #40E38F

square

#4043E3 #E34094 #E3E040 #40E38F

split-complementary

#4043E3 #E38F40 #94E340

monochromatic

#161893 #1D21C8 #4043E3 #7578EB #ABACF3

Accessibility & contrast

On white

6.71

#4043E3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#4043E3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4043E3

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4043E3	#FFFFFF	#000000	##FFFFFF
##4043E3	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064E8

Deuteranopia (green-blind)

#0054E0

Tritanopia (blue-blind)

#00708E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #4043e3;
/* rgb */ color: rgb(64, 67, 227);
/* oklch */ color: oklch(49.5% 0.234 273.0);

Tailwind

colors: {
  custom: {
    50: '#8c78ed',
    500: '#4043e3',
    950: '#000000',
  },
}

SCSS

$custom: #4043e3;
$custom-light: #8c78ed;
$custom-dark: #000000;

JSON

{
  "hex": "#4043e3",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 227
  },
  "hsl": {
    "h": 238.896,
    "s": 74.429,
    "l": 57.059
  },
  "oklch": {
    "l": 0.49498,
    "c": 0.23423,
    "h": 273
  },
  "luminance": 0.1065
}

Semantic roles & 50–950 ramp

primary

#4043E3

secondary

#E1DF9E

accent

#EE37F1

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0916

muted

#7E7B84

Preview Lab

Preview with #4043E3

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

Preview Lab → · Contrast checker → · Palette generator →