#3F43D5#3F43D5

#3F43D5 is a mid, highly saturated blue. Relative luminance 0.099; OKLCH L 48.1% C 0.217 H 273.5°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F43D5
RGB	rgb(63, 67, 213)
HSL	hsl(238, 64%, 54%)
HSV	hsv(238, 70%, 84%)
CMYK	cmyk(70.4%, 68.5%, 0%, 16.5%)
CIE-LAB	lab(37.61, 45.34, -75.09)
CIE-LCH	lch(37.61, 87.72, 301.12°)
OKLab	oklab(48.1% 0.0131 -0.2171)
OKLCH	oklch(48.1% 0.217 273.5)
XYZ	xyz(16.0633, 9.8736, 63.9971)
Luminance	0.0988 (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

#3F43D5 #D5D13F

analogous

#3F8ED5 #3F43D5 #863FD5

triadic

#3F43D5 #D53F43 #43D53F

tetradic

#3F43D5 #D53F8E #D5D13F #3FD586

square

#3F43D5 #D53F8E #D5D13F #3FD586

split-complementary

#3F43D5 #D5863F #8ED53F

monochromatic

#1C1E7E #272AB0 #3F43D5 #7174E0 #A3A5EB

Accessibility & contrast

On white

7.06

#3F43D5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#3F43D5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F43D5

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F43D5	#FFFFFF	#000000	##FFFFFF
##3F43D5	1.00	7.06	2.97	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D9

Deuteranopia (green-blind)

#0051D2

Tritanopia (blue-blind)

#006B87

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f43d5;
/* rgb */ color: rgb(63, 67, 213);
/* oklch */ color: oklch(48.1% 0.217 273.5);

Tailwind

colors: {
  custom: {
    50: '#8878e3',
    500: '#3f43d5',
    950: '#000000',
  },
}

SCSS

$custom: #3f43d5;
$custom-light: #8878e3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f43d5",
  "rgb": {
    "r": 63,
    "g": 67,
    "b": 213
  },
  "hsl": {
    "h": 238.4,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.48104,
    "c": 0.21748,
    "h": 273.5
  },
  "luminance": 0.09875
}

Semantic roles & 50–950 ramp

primary

#3F43D5

secondary

#D8D698

accent

#E341E7

background

#F9F7FE

surface

#F1EDFC

border

#CBC8D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3F43D5

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

Preview Lab → · Contrast checker → · Palette generator →