#3F6CE1#3F6CE1

#3F6CE1 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.5% C 0.185 H 265.1°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CE1
RGB	rgb(63, 108, 225)
HSL	hsl(223, 73%, 56%)
HSV	hsv(223, 72%, 88%)
CMYK	cmyk(72%, 52%, 0%, 11.8%)
CIE-LAB	lab(48.53, 24.11, -64.13)
CIE-LCH	lch(48.53, 68.52, 290.61°)
OKLab	oklab(56.49% -0.0158 -0.1845)
OKLCH	oklch(56.49% 0.185 265.1)
XYZ	xyz(20.9983, 17.2159, 73.4359)
Luminance	0.1722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CE1 #E1B43F

analogous

#3FBDE1 #3F6CE1 #633FE1

triadic

#3F6CE1 #E13F6C #6CE13F

tetradic

#3F6CE1 #E13FBD #E1B43F #3FE163

square

#3F6CE1 #E13FBD #E1B43F #3FE163

split-complementary

#3F6CE1 #E1633F #BDE13F

monochromatic

#16388F #1F4DC4 #3F6CE1 #7495E9 #A9BDF2

Accessibility & contrast

On white

4.73

#3F6CE1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3F6CE1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CE1

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CE1	#FFFFFF	#000000	##FFFFFF
##3F6CE1	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B7BE5

Deuteranopia (green-blind)

#006CDF

Tritanopia (blue-blind)

#00889C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f6ce1;
/* rgb */ color: rgb(63, 108, 225);
/* oklch */ color: oklch(56.5% 0.185 265.1);

Tailwind

colors: {
  custom: {
    50: '#8895eb',
    500: '#3f6ce1',
    950: '#000000',
  },
}

SCSS

$custom: #3f6ce1;
$custom-light: #8895eb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6ce1",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 225
  },
  "hsl": {
    "h": 223.333,
    "s": 72.973,
    "l": 56.471
  },
  "oklch": {
    "l": 0.56492,
    "c": 0.1852,
    "h": 265.1
  },
  "luminance": 0.17218
}

Semantic roles & 50–950 ramp

primary

#3F6CE1

secondary

#DFCD9D

accent

#BD38F0

background

#F9F9FE

surface

#F1F1FD

border

#CBCBD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #3F6CE1

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

Preview Lab → · Contrast checker → · Palette generator →