#3F75D6#3F75D6

#3F75D6 is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.6% C 0.160 H 261.1°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F75D6
RGB	rgb(63, 117, 214)
HSL	hsl(219, 65%, 54%)
HSV	hsv(219, 71%, 84%)
CMYK	cmyk(70.6%, 45.3%, 0%, 16.1%)
CIE-LAB	lab(50.25, 14.49, -55.13)
CIE-LCH	lch(50.25, 57.00, 284.73°)
OKLab	oklab(57.58% -0.0248 -0.1579)
OKLCH	oklch(57.58% 0.16 261.1)
XYZ	xyz(20.5444, 18.6322, 66.1189)
Luminance	0.1863 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F75D6 #D6A03F

analogous

#3FC1D6 #3F75D6 #553FD6

triadic

#3F75D6 #D63F75 #75D63F

tetradic

#3F75D6 #D63FC1 #D6A03F #3FD655

square

#3F75D6 #D63FC1 #D6A03F #3FD655

split-complementary

#3F75D6 #D6553F #C1D63F

monochromatic

#1B3F7F #2658B2 #3F75D6 #7199E1 #A4BDEC

Accessibility & contrast

On white

4.44

#3F75D6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#3F75D6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F75D6

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F75D6	#FFFFFF	#000000	##000000
##3F75D6	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#447FDA

Deuteranopia (green-blind)

#2471D4

Tritanopia (blue-blind)

#008C9B

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f75d6;
/* rgb */ color: rgb(63, 117, 214);
/* oklch */ color: oklch(57.6% 0.160 261.1);

Tailwind

colors: {
  custom: {
    50: '#869ce3',
    500: '#3f75d6',
    950: '#000000',
  },
}

SCSS

$custom: #3f75d6;
$custom-light: #869ce3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f75d6",
  "rgb": {
    "r": 63,
    "g": 117,
    "b": 214
  },
  "hsl": {
    "h": 218.543,
    "s": 64.807,
    "l": 54.314
  },
  "oklch": {
    "l": 0.57582,
    "c": 0.15983,
    "h": 261.1
  },
  "luminance": 0.18634
}

Semantic roles & 50–950 ramp

primary

#3F75D6

secondary

#D8C298

accent

#AC40E8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E15

muted

#7D7E84

Preview Lab

Preview with #3F75D6

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

Preview Lab → · Contrast checker → · Palette generator →