#3F38C8#3F38C8

#3F38C8 is a mid, highly saturated blue. Relative luminance 0.081; OKLCH L 45.2% C 0.213 H 275.8°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#3F38C8
RGB	rgb(63, 56, 200)
HSL	hsl(243, 57%, 50%)
HSV	hsv(243, 72%, 78%)
CMYK	cmyk(68.5%, 72%, 0%, 21.6%)
CIE-LAB	lab(34.10, 47.41, -73.35)
CIE-LCH	lch(34.10, 87.34, 302.88°)
OKLab	oklab(45.21% 0.0215 -0.212)
OKLCH	oklch(45.21% 0.213 275.8)
XYZ	xyz(13.8860, 8.0540, 55.4552)
Luminance	0.0805 (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

#3F38C8 #C1C838

analogous

#3879C8 #3F38C8 #8738C8

triadic

#3F38C8 #C83F38 #38C83F

tetradic

#3F38C8 #C83879 #C1C838 #38C887

square

#3F38C8 #C83879 #C1C838 #38C887

split-complementary

#3F38C8 #C88738 #79C838

monochromatic

#211D69 #302A99 #3F38C8 #6D68D5 #9C98E3

Accessibility & contrast

On white

8.04

#3F38C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#3F38C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F38C8

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F38C8	#FFFFFF	#000000	##FFFFFF
##3F38C8	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056CC

Deuteranopia (green-blind)

#004AC5

Tritanopia (blue-blind)

#00607C

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f38c8;
/* rgb */ color: rgb(63, 56, 200);
/* oklch */ color: oklch(45.2% 0.213 275.8);

Tailwind

colors: {
  custom: {
    50: '#8770da',
    500: '#3f38c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f38c8;
$custom-light: #8770da;
$custom-dark: #000000;

JSON

{
  "hex": "#3f38c8",
  "rgb": {
    "r": 63,
    "g": 56,
    "b": 200
  },
  "hsl": {
    "h": 242.917,
    "s": 56.693,
    "l": 50.196
  },
  "oklch": {
    "l": 0.45209,
    "c": 0.21306,
    "h": 275.8
  },
  "luminance": 0.08055
}

Semantic roles & 50–950 ramp

primary

#3F38C8

secondary

#CBCE8E

accent

#E048D9

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F38C8

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

Preview Lab → · Contrast checker → · Palette generator →