#3F38CF#3F38CF

#3F38CF is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.9% C 0.221 H 275.3°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#3F38CF
RGB	rgb(63, 56, 207)
HSL	hsl(243, 61%, 52%)
HSV	hsv(243, 73%, 81%)
CMYK	cmyk(69.6%, 72.9%, 0%, 18.8%)
CIE-LAB	lab(34.78, 49.65, -76.29)
CIE-LCH	lch(34.78, 91.02, 303.06°)
OKLab	oklab(45.9% 0.0203 -0.2206)
OKLCH	oklch(45.9% 0.221 275.3)
XYZ	xyz(14.7228, 8.3887, 59.8627)
Luminance	0.0839 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.63

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F38CF #C8CF38

analogous

#387DCF #3F38CF #8A38CF

triadic

#3F38CF #CF3F38 #38CF3F

tetradic

#3F38CF #CF387D #C8CF38 #38CF8A

square

#3F38CF #CF387D #C8CF38 #38CF8A

split-complementary

#3F38CF #CF8A38 #7DCF38

monochromatic

#1F1B71 #2D27A3 #3F38CF #6F69DB #9E9BE7

Accessibility & contrast

On white

7.84

#3F38CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#3F38CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F38CF

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F38CF	#FFFFFF	#000000	##FFFFFF
##3F38CF	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058D3

Deuteranopia (green-blind)

#004BCC

Tritanopia (blue-blind)

#006380

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f38cf;
/* rgb */ color: rgb(63, 56, 207);
/* oklch */ color: oklch(45.9% 0.221 275.3);

Tailwind

colors: {
  custom: {
    50: '#8871df',
    500: '#3f38cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f38cf;
$custom-light: #8871df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f38cf",
  "rgb": {
    "r": 63,
    "g": 56,
    "b": 207
  },
  "hsl": {
    "h": 242.781,
    "s": 61.134,
    "l": 51.569
  },
  "oklch": {
    "l": 0.45902,
    "c": 0.22149,
    "h": 275.3
  },
  "luminance": 0.0839
}

Semantic roles & 50–950 ramp

primary

#3F38CF

secondary

#D0D390

accent

#E444DD

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F38CF

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

Preview Lab → · Contrast checker → · Palette generator →