#3F39C8#3F39C8

#3F39C8 is a mid, highly saturated blue. Relative luminance 0.082; OKLCH L 45.4% C 0.212 H 275.7°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F39C8
RGB	rgb(63, 57, 200)
HSL	hsl(243, 57%, 50%)
HSV	hsv(243, 72%, 78%)
CMYK	cmyk(68.5%, 71.5%, 0%, 21.6%)
CIE-LAB	lab(34.30, 46.85, -73.02)
CIE-LCH	lch(34.30, 86.75, 302.69°)
OKLab	oklab(45.35% 0.021 -0.211)
OKLCH	oklch(45.35% 0.212 275.7)
XYZ	xyz(13.9349, 8.1519, 55.4715)
Luminance	0.0815 (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

#3F39C8 #C2C839

analogous

#397BC8 #3F39C8 #8639C8

triadic

#3F39C8 #C83F39 #39C83F

tetradic

#3F39C8 #C8397B #C2C839 #39C886

square

#3F39C8 #C8397B #C2C839 #39C886

split-complementary

#3F39C8 #C88639 #7BC839

monochromatic

#201D69 #2F2B99 #3F39C8 #6D69D5 #9C99E3

Accessibility & contrast

On white

7.98

#3F39C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#3F39C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39C8

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F39C8	#FFFFFF	#000000	##FFFFFF
##3F39C8	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057CC

Deuteranopia (green-blind)

#004AC5

Tritanopia (blue-blind)

#00617D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3f39c8;
/* rgb */ color: rgb(63, 57, 200);
/* oklch */ color: oklch(45.4% 0.212 275.7);

Tailwind

colors: {
  custom: {
    50: '#8771da',
    500: '#3f39c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f39c8;
$custom-light: #8771da;
$custom-dark: #000000;

JSON

{
  "hex": "#3f39c8",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 200
  },
  "hsl": {
    "h": 242.517,
    "s": 56.522,
    "l": 50.392
  },
  "oklch": {
    "l": 0.45354,
    "c": 0.21205,
    "h": 275.7
  },
  "luminance": 0.08153
}

Semantic roles & 50–950 ramp

primary

#3F39C8

secondary

#CCCE8F

accent

#E048D9

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F39C8

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

Preview Lab → · Contrast checker → · Palette generator →