#3F43CC#3F43CC

#3F43CC is a mid, highly saturated blue. Relative luminance 0.094; OKLCH L 47.3% C 0.206 H 273.9°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#3F43CC
RGB	rgb(63, 67, 204)
HSL	hsl(238, 58%, 52%)
HSV	hsv(238, 69%, 80%)
CMYK	cmyk(69.1%, 67.2%, 0%, 20%)
CIE-LAB	lab(36.80, 42.34, -71.23)
CIE-LCH	lch(36.80, 82.86, 300.73°)
OKLab	oklab(47.27% 0.0142 -0.2058)
OKLCH	oklch(47.27% 0.206 273.9)
XYZ	xyz(14.9525, 9.4293, 58.1471)
Luminance	0.0943 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.86

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F43CC #CCC83F

analogous

#3F89CC #3F43CC #823FCC

triadic

#3F43CC #CC3F43 #43CC3F

tetradic

#3F43CC #CC3F89 #CCC83F #3FCC82

square

#3F43CC #CC3F89 #CCC83F #3FCC82

split-complementary

#3F43CC #CC823F #89CC3F

monochromatic

#1E2172 #2B2FA3 #3F43CC #6F72D9 #A0A2E6

Accessibility & contrast

On white

7.28

#3F43CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#3F43CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F43CC

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F43CC	#FFFFFF	#000000	##FFFFFF
##3F43CC	1.00	7.28	2.89	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DD0

Deuteranopia (green-blind)

#0050C9

Tritanopia (blue-blind)

#006882

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f43cc;
/* rgb */ color: rgb(63, 67, 204);
/* oklch */ color: oklch(47.3% 0.206 273.9);

Tailwind

colors: {
  custom: {
    50: '#8778dd',
    500: '#3f43cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f43cc;
$custom-light: #8778dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f43cc",
  "rgb": {
    "r": 63,
    "g": 67,
    "b": 204
  },
  "hsl": {
    "h": 238.298,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.47265,
    "c": 0.20629,
    "h": 273.9
  },
  "luminance": 0.09431
}

Semantic roles & 50–950 ramp

primary

#3F43CC

secondary

#D2D095

accent

#DD47E1

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F43CC

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

Preview Lab → · Contrast checker → · Palette generator →