#4243CA#4243CA

#4243CA is a mid, highly saturated blue. Relative luminance 0.094; OKLCH L 47.3% C 0.203 H 275.0°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#4243CA
RGB	rgb(66, 67, 202)
HSL	hsl(240, 56%, 53%)
HSV	hsv(240, 67%, 79%)
CMYK	cmyk(67.3%, 66.8%, 0%, 20.8%)
CIE-LAB	lab(36.81, 42.04, -70.04)
CIE-LCH	lch(36.81, 81.69, 300.97°)
OKLab	oklab(47.27% 0.0179 -0.2023)
OKLCH	oklch(47.27% 0.203 275)
XYZ	xyz(14.9111, 9.4355, 56.9011)
Luminance	0.0944 (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

#4243CA #CAC942

analogous

#4287CA #4243CA #8542CA

triadic

#4243CA #CA4243 #43CA42

tetradic

#4243CA #CA4287 #CAC942 #42CA85

square

#4243CA #CA4287 #CAC942 #42CA85

split-complementary

#4243CA #CA8542 #87CA42

monochromatic

#202072 #2D2EA2 #4243CA #7273D7 #A2A2E5

Accessibility & contrast

On white

7.27

#4243CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#4243CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4243CA

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4243CA	#FFFFFF	#000000	##FFFFFF
##4243CA	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DCE

Deuteranopia (green-blind)

#0050C7

Tritanopia (blue-blind)

#006781

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #4243ca;
/* rgb */ color: rgb(66, 67, 202);
/* oklch */ color: oklch(47.3% 0.203 275.0);

Tailwind

colors: {
  custom: {
    50: '#8778db',
    500: '#4243ca',
    950: '#000000',
  },
}

SCSS

$custom: #4243ca;
$custom-light: #8778db;
$custom-dark: #000000;

JSON

{
  "hex": "#4243ca",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 202
  },
  "hsl": {
    "h": 239.559,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.47269,
    "c": 0.20304,
    "h": 275
  },
  "luminance": 0.09437
}

Semantic roles & 50–950 ramp

primary

#4243CA

secondary

#D1D196

accent

#DE48DF

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #4243CA

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

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