#4243D0#4243D0

#4243D0 is a mid, highly saturated blue. Relative luminance 0.097; OKLCH L 47.8% C 0.211 H 274.7°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#4243D0
RGB	rgb(66, 67, 208)
HSL	hsl(240, 60%, 54%)
HSV	hsv(240, 68%, 82%)
CMYK	cmyk(68.3%, 67.8%, 0%, 18.4%)
CIE-LAB	lab(37.34, 44.03, -72.64)
CIE-LCH	lch(37.34, 84.95, 301.22°)
OKLab	oklab(47.82% 0.0172 -0.2099)
OKLCH	oklch(47.82% 0.211 274.7)
XYZ	xyz(15.6353, 9.7252, 60.7154)
Luminance	0.0973 (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

#4243D0 #D0CF42

analogous

#428AD0 #4243D0 #8842D0

triadic

#4243D0 #D04243 #43D042

tetradic

#4243D0 #D0428A #D0CF42 #42D088

square

#4243D0 #D0428A #D0CF42 #42D088

split-complementary

#4243D0 #D08842 #8AD042

monochromatic

#1E1F79 #2A2BAA #4243D0 #7374DC #A4A5E8

Accessibility & contrast

On white

7.13

#4243D0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#4243D0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4243D0

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4243D0	#FFFFFF	#000000	##FFFFFF
##4243D0	1.00	7.13	2.95	7.13
#FFFFFF	7.13	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ED4

Deuteranopia (green-blind)

#0051CD

Tritanopia (blue-blind)

#006984

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #4243d0;
/* rgb */ color: rgb(66, 67, 208);
/* oklch */ color: oklch(47.8% 0.211 274.7);

Tailwind

colors: {
  custom: {
    50: '#8978e0',
    500: '#4243d0',
    950: '#000000',
  },
}

SCSS

$custom: #4243d0;
$custom-light: #8978e0;
$custom-dark: #000000;

JSON

{
  "hex": "#4243d0",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 208
  },
  "hsl": {
    "h": 239.577,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.47819,
    "c": 0.21056,
    "h": 274.7
  },
  "luminance": 0.09727
}

Semantic roles & 50–950 ramp

primary

#4243D0

secondary

#D5D599

accent

#E244E3

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #4243D0

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

Preview Lab → · Contrast checker → · Palette generator →