#3F38CC#3F38CC

#3F38CC is a mid, highly saturated blue. Relative luminance 0.082; OKLCH L 45.6% C 0.218 H 275.5°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#3F38CC
RGB	rgb(63, 56, 204)
HSL	hsl(243, 59%, 51%)
HSV	hsv(243, 73%, 80%)
CMYK	cmyk(69.1%, 72.5%, 0%, 20%)
CIE-LAB	lab(34.48, 48.69, -75.04)
CIE-LCH	lch(34.48, 89.45, 302.98°)
OKLab	oklab(45.6% 0.0208 -0.2169)
OKLCH	oklch(45.6% 0.218 275.5)
XYZ	xyz(14.3596, 8.2434, 57.9494)
Luminance	0.0824 (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

#3F38CC #C5CC38

analogous

#387BCC #3F38CC #8938CC

triadic

#3F38CC #CC3F38 #38CC3F

tetradic

#3F38CC #CC387B #C5CC38 #38CC89

square

#3F38CC #CC387B #C5CC38 #38CC89

split-complementary

#3F38CC #CC8938 #7BCC38

monochromatic

#201C6E #2E299E #3F38CC #6E69D8 #9D99E5

Accessibility & contrast

On white

7.93

#3F38CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#3F38CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F38CC

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F38CC	#FFFFFF	#000000	##FFFFFF
##3F38CC	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058D0

Deuteranopia (green-blind)

#004AC9

Tritanopia (blue-blind)

#00627F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3f38cc;
/* rgb */ color: rgb(63, 56, 204);
/* oklch */ color: oklch(45.6% 0.218 275.5);

Tailwind

colors: {
  custom: {
    50: '#8771dd',
    500: '#3f38cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f38cc;
$custom-light: #8771dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f38cc",
  "rgb": {
    "r": 63,
    "g": 56,
    "b": 204
  },
  "hsl": {
    "h": 242.838,
    "s": 59.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.45604,
    "c": 0.2179,
    "h": 275.5
  },
  "luminance": 0.08245
}

Semantic roles & 50–950 ramp

primary

#3F38CC

secondary

#CED18F

accent

#E245DB

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F38CC

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

Preview Lab → · Contrast checker → · Palette generator →