#3F43CD#3F43CD

#3F43CD is a mid, highly saturated blue. Relative luminance 0.095; OKLCH L 47.4% C 0.208 H 273.9°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#3F43CD
RGB	rgb(63, 67, 205)
HSL	hsl(238, 59%, 53%)
HSV	hsv(238, 69%, 80%)
CMYK	cmyk(69.3%, 67.3%, 0%, 19.6%)
CIE-LAB	lab(36.89, 42.67, -71.66)
CIE-LCH	lch(36.89, 83.41, 300.77°)
OKLab	oklab(47.36% 0.014 -0.2071)
OKLCH	oklch(47.36% 0.208 273.9)
XYZ	xyz(15.0728, 9.4774, 58.7808)
Luminance	0.0948 (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

#3F43CD #CDC93F

analogous

#3F8ACD #3F43CD #823FCD

triadic

#3F43CD #CD3F43 #43CD3F

tetradic

#3F43CD #CD3F8A #CDC93F #3FCD82

square

#3F43CD #CD3F8A #CDC93F #3FCD82

split-complementary

#3F43CD #CD823F #8ACD3F

monochromatic

#1E2074 #2B2EA4 #3F43CD #7073DA #A0A2E6

Accessibility & contrast

On white

7.25

#3F43CD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#3F43CD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F43CD

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F43CD	#FFFFFF	#000000	##FFFFFF
##3F43CD	1.00	7.25	2.90	7.25
#FFFFFF	7.25	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DD1

Deuteranopia (green-blind)

#0050CA

Tritanopia (blue-blind)

#006882

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f43cd;
/* rgb */ color: rgb(63, 67, 205);
/* oklch */ color: oklch(47.4% 0.208 273.9);

Tailwind

colors: {
  custom: {
    50: '#8778dd',
    500: '#3f43cd',
    950: '#000000',
  },
}

SCSS

$custom: #3f43cd;
$custom-light: #8778dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f43cd",
  "rgb": {
    "r": 63,
    "g": 67,
    "b": 205
  },
  "hsl": {
    "h": 238.31,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.47357,
    "c": 0.20755,
    "h": 273.9
  },
  "luminance": 0.09479
}

Semantic roles & 50–950 ramp

primary

#3F43CD

secondary

#D3D195

accent

#DD46E2

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F43CD

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

Preview Lab → · Contrast checker → · Palette generator →