#3F75E2#3F75E2

#3F75E2 is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.4% C 0.176 H 262.5°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F75E2
RGB	rgb(63, 117, 226)
HSL	hsl(220, 74%, 57%)
HSV	hsv(220, 72%, 89%)
CMYK	cmyk(72.1%, 48.2%, 0%, 11.4%)
CIE-LAB	lab(51.00, 18.83, -60.71)
CIE-LCH	lch(51.00, 63.56, 287.23°)
OKLab	oklab(58.39% -0.023 -0.1743)
OKLCH	oklch(58.39% 0.176 262.5)
XYZ	xyz(22.1338, 19.2679, 74.4893)
Luminance	0.1927 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F75E2 #E2AC3F

analogous

#3FC6E2 #3F75E2 #5B3FE2

triadic

#3F75E2 #E23F75 #75E23F

tetradic

#3F75E2 #E23FC6 #E2AC3F #3FE25B

square

#3F75E2 #E23FC6 #E2AC3F #3FE25B

split-complementary

#3F75E2 #E25B3F #C6E23F

monochromatic

#163F91 #1E56C6 #3F75E2 #749BEA #A9C1F2

Accessibility & contrast

On white

4.33

#3F75E2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#3F75E2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F75E2

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F75E2	#FFFFFF	#000000	##000000
##3F75E2	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3881E6

Deuteranopia (green-blind)

#0072E0

Tritanopia (blue-blind)

#008FA1

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f75e2;
/* rgb */ color: rgb(63, 117, 226);
/* oklch */ color: oklch(58.4% 0.176 262.5);

Tailwind

colors: {
  custom: {
    50: '#889cec',
    500: '#3f75e2',
    950: '#000000',
  },
}

SCSS

$custom: #3f75e2;
$custom-light: #889cec;
$custom-dark: #000000;

JSON

{
  "hex": "#3f75e2",
  "rgb": {
    "r": 63,
    "g": 117,
    "b": 226
  },
  "hsl": {
    "h": 220.123,
    "s": 73.756,
    "l": 56.667
  },
  "oklch": {
    "l": 0.58393,
    "c": 0.17582,
    "h": 262.5
  },
  "luminance": 0.1927
}

Semantic roles & 50–950 ramp

primary

#3F75E2

secondary

#E0CA9D

accent

#B337F0

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #3F75E2

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

Preview Lab → · Contrast checker → · Palette generator →