#3F43CE#3F43CE

#3F43CE is a mid, highly saturated blue. Relative luminance 0.095; OKLCH L 47.4% C 0.209 H 273.8°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#3F43CE
RGB	rgb(63, 67, 206)
HSL	hsl(238, 59%, 53%)
HSV	hsv(238, 69%, 81%)
CMYK	cmyk(69.4%, 67.5%, 0%, 19.2%)
CIE-LAB	lab(36.98, 43.01, -72.10)
CIE-LCH	lch(36.98, 83.95, 300.82°)
OKLab	oklab(47.45% 0.0139 -0.2083)
OKLCH	oklch(47.45% 0.209 273.8)
XYZ	xyz(15.1939, 9.5259, 59.4185)
Luminance	0.0953 (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

#3F43CE #CECA3F

analogous

#3F8ACE #3F43CE #833FCE

triadic

#3F43CE #CE3F43 #43CE3F

tetradic

#3F43CE #CE3F8A #CECA3F #3FCE83

square

#3F43CE #CE3F8A #CECA3F #3FCE83

split-complementary

#3F43CE #CE833F #8ACE3F

monochromatic

#1E2075 #2A2EA6 #3F43CE #7073DA #A1A2E7

Accessibility & contrast

On white

7.23

#3F43CE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#3F43CE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F43CE

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F43CE	#FFFFFF	#000000	##FFFFFF
##3F43CE	1.00	7.23	2.91	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ED2

Deuteranopia (green-blind)

#0050CB

Tritanopia (blue-blind)

#006883

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f43ce;
/* rgb */ color: rgb(63, 67, 206);
/* oklch */ color: oklch(47.4% 0.209 273.8);

Tailwind

colors: {
  custom: {
    50: '#8778de',
    500: '#3f43ce',
    950: '#000000',
  },
}

SCSS

$custom: #3f43ce;
$custom-light: #8778de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f43ce",
  "rgb": {
    "r": 63,
    "g": 67,
    "b": 206
  },
  "hsl": {
    "h": 238.322,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.4745,
    "c": 0.2088,
    "h": 273.8
  },
  "luminance": 0.09527
}

Semantic roles & 50–950 ramp

primary

#3F43CE

secondary

#D3D295

accent

#DE45E3

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F43CE

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

Preview Lab → · Contrast checker → · Palette generator →