#3F6BBD#3F6BBD

#3F6BBD is a mid, vivid blue. Relative luminance 0.152; OKLCH L 53.8% C 0.138 H 261.7°. Best body text is #FFFFFF at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BBD
RGB	rgb(63, 107, 189)
HSL	hsl(219, 50%, 49%)
HSV	hsv(219, 67%, 74%)
CMYK	cmyk(66.7%, 43.4%, 0%, 25.9%)
CIE-LAB	lab(45.97, 11.76, -47.67)
CIE-LCH	lch(45.97, 49.10, 283.86°)
OKLab	oklab(53.8% -0.0199 -0.1361)
OKLCH	oklch(53.8% 0.138 261.7)
XYZ	xyz(16.4897, 15.2447, 50.2078)
Luminance	0.1525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BBD #BD913F

analogous

#3FAABD #3F6BBD #523FBD

triadic

#3F6BBD #BD3F6B #6BBD3F

tetradic

#3F6BBD #BD3FAA #BD913F #3FBD52

square

#3F6BBD #BD3FAA #BD913F #3FBD52

split-complementary

#3F6BBD #BD523F #AABD3F

monochromatic

#203761 #30518F #3F6BBD #6B8ECE #99B1DD

Accessibility & contrast

On white

5.19

#3F6BBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#3F6BBD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BBD

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BBD	#FFFFFF	#000000	##FFFFFF
##3F6BBD	1.00	5.19	4.05	5.19
#FFFFFF	5.19	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4473C0

Deuteranopia (green-blind)

#2F67BB

Tritanopia (blue-blind)

#007E8B

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3f6bbd;
/* rgb */ color: rgb(63, 107, 189);
/* oklch */ color: oklch(53.8% 0.138 261.7);

Tailwind

colors: {
  custom: {
    50: '#8194d1',
    500: '#3f6bbd',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bbd;
$custom-light: #8194d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bbd",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 189
  },
  "hsl": {
    "h": 219.048,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.53798,
    "c": 0.13757,
    "h": 261.7
  },
  "luminance": 0.15246
}

Semantic roles & 50–950 ramp

primary

#3F6BBD

secondary

#C9B58F

accent

#A94EDA

background

#F8F9FC

surface

#F0F1F9

border

#CBCBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3F6BBD

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

Preview Lab → · Contrast checker → · Palette generator →