#4043CF#4043CF

#4043CF is a mid, highly saturated blue. Relative luminance 0.096; OKLCH L 47.6% C 0.210 H 274.1°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#4043CF
RGB	rgb(64, 67, 207)
HSL	hsl(239, 60%, 53%)
HSV	hsv(239, 69%, 81%)
CMYK	cmyk(69.1%, 67.6%, 0%, 18.8%)
CIE-LAB	lab(37.13, 43.46, -72.42)
CIE-LCH	lch(37.13, 84.46, 300.97°)
OKLab	oklab(47.6% 0.015 -0.2093)
OKLCH	oklch(47.6% 0.21 274.1)
XYZ	xyz(15.3802, 9.6078, 60.0633)
Luminance	0.0961 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.16

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4043CF #CFCC40

analogous

#408BCF #4043CF #8440CF

triadic

#4043CF #CF4043 #43CF40

tetradic

#4043CF #CF408B #CFCC40 #40CF84

square

#4043CF #CF408B #CFCC40 #40CF84

split-complementary

#4043CF #CF8440 #8BCF40

monochromatic

#1E2077 #2A2DA8 #4043CF #7173DB #A2A3E8

Accessibility & contrast

On white

7.19

#4043CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#4043CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4043CF

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4043CF	#FFFFFF	#000000	##FFFFFF
##4043CF	1.00	7.19	2.92	7.19
#FFFFFF	7.19	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ED3

Deuteranopia (green-blind)

#0051CC

Tritanopia (blue-blind)

#006983

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #4043cf;
/* rgb */ color: rgb(64, 67, 207);
/* oklch */ color: oklch(47.6% 0.210 274.1);

Tailwind

colors: {
  custom: {
    50: '#8878df',
    500: '#4043cf',
    950: '#000000',
  },
}

SCSS

$custom: #4043cf;
$custom-light: #8878df;
$custom-dark: #000000;

JSON

{
  "hex": "#4043cf",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 207
  },
  "hsl": {
    "h": 238.741,
    "s": 59.833,
    "l": 53.137
  },
  "oklch": {
    "l": 0.47603,
    "c": 0.2098,
    "h": 274.1
  },
  "luminance": 0.09609
}

Semantic roles & 50–950 ramp

primary

#4043CF

secondary

#D4D397

accent

#E045E3

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #4043CF

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

Preview Lab → · Contrast checker → · Palette generator →