#3F6BE1#3F6BE1

#3F6BE1 is a mid, vivid blue. Relative luminance 0.170; OKLCH L 56.3% C 0.186 H 265.4°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BE1
RGB	rgb(63, 107, 225)
HSL	hsl(224, 73%, 56%)
HSV	hsv(224, 72%, 88%)
CMYK	cmyk(72%, 52.4%, 0%, 11.8%)
CIE-LAB	lab(48.27, 24.74, -64.56)
CIE-LCH	lch(48.27, 69.14, 290.97°)
OKLab	oklab(56.29% -0.015 -0.1858)
OKLCH	oklch(56.29% 0.186 265.4)
XYZ	xyz(20.8934, 17.0062, 73.4010)
Luminance	0.1701 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BE1 #E1B53F

analogous

#3FBCE1 #3F6BE1 #643FE1

triadic

#3F6BE1 #E13F6B #6BE13F

tetradic

#3F6BE1 #E13FBC #E1B53F #3FE164

square

#3F6BE1 #E13FBC #E1B53F #3FE164

split-complementary

#3F6BE1 #E1643F #BCE13F

monochromatic

#16378F #1F4CC4 #3F6BE1 #7494E9 #A9BDF2

Accessibility & contrast

On white

4.77

#3F6BE1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#3F6BE1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BE1

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BE1	#FFFFFF	#000000	##FFFFFF
##3F6BE1	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#167AE5

Deuteranopia (green-blind)

#006CDF

Tritanopia (blue-blind)

#00879C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f6be1;
/* rgb */ color: rgb(63, 107, 225);
/* oklch */ color: oklch(56.3% 0.186 265.4);

Tailwind

colors: {
  custom: {
    50: '#8894eb',
    500: '#3f6be1',
    950: '#000000',
  },
}

SCSS

$custom: #3f6be1;
$custom-light: #8894eb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6be1",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 225
  },
  "hsl": {
    "h": 223.704,
    "s": 72.973,
    "l": 56.471
  },
  "oklch": {
    "l": 0.56292,
    "c": 0.1864,
    "h": 265.4
  },
  "luminance": 0.17008
}

Semantic roles & 50–950 ramp

primary

#3F6BE1

secondary

#DFCD9D

accent

#BE38F0

background

#F9F9FE

surface

#F1F1FD

border

#CBCBD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #3F6BE1

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

Preview Lab → · Contrast checker → · Palette generator →