#3F50CD#3F50CD

#3F50CD is a mid, vivid blue. Relative luminance 0.112; OKLCH L 49.6% C 0.193 H 271.5°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#3F50CD
RGB	rgb(63, 80, 205)
HSL	hsl(233, 59%, 53%)
HSV	hsv(233, 69%, 80%)
CMYK	cmyk(69.3%, 61%, 0%, 19.6%)
CIE-LAB	lab(39.92, 34.68, -66.71)
CIE-LCH	lch(39.92, 75.19, 297.47°)
OKLab	oklab(49.57% 0.005 -0.1925)
OKLCH	oklch(49.57% 0.193 271.5)
XYZ	xyz(15.9343, 11.2003, 59.0679)
Luminance	0.1120 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F50CD #CDBC3F

analogous

#3F97CD #3F50CD #753FCD

triadic

#3F50CD #CD3F50 #50CD3F

tetradic

#3F50CD #CD3F97 #CDBC3F #3FCD75

square

#3F50CD #CD3F97 #CDBC3F #3FCD75

split-complementary

#3F50CD #CD753F #97CD3F

monochromatic

#1E2874 #2B39A4 #3F50CD #707CDA #A0A9E6

Accessibility & contrast

On white

6.48

#3F50CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#3F50CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F50CD

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F50CD	#FFFFFF	#000000	##FFFFFF
##3F50CD	1.00	6.48	3.24	6.48
#FFFFFF	6.48	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065D1

Deuteranopia (green-blind)

#0058CB

Tritanopia (blue-blind)

#007087

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3f50cd;
/* rgb */ color: rgb(63, 80, 205);
/* oklch */ color: oklch(49.6% 0.193 271.5);

Tailwind

colors: {
  custom: {
    50: '#8681dd',
    500: '#3f50cd',
    950: '#000000',
  },
}

SCSS

$custom: #3f50cd;
$custom-light: #8681dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f50cd",
  "rgb": {
    "r": 63,
    "g": 80,
    "b": 205
  },
  "hsl": {
    "h": 232.817,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.49573,
    "c": 0.19253,
    "h": 271.5
  },
  "luminance": 0.11202
}

Semantic roles & 50–950 ramp

primary

#3F50CD

secondary

#D3CB95

accent

#CF46E2

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #3F50CD

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

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