#3F6DBF#3F6DBF

#3F6DBF is a mid, vivid blue. Relative luminance 0.158; OKLCH L 54.4% C 0.138 H 261.0°. Best body text is #FFFFFF at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DBF
RGB	rgb(63, 109, 191)
HSL	hsl(218, 50%, 50%)
HSV	hsv(218, 67%, 75%)
CMYK	cmyk(67%, 42.9%, 0%, 25.1%)
CIE-LAB	lab(46.65, 11.22, -47.74)
CIE-LCH	lch(46.65, 49.04, 283.23°)
OKLab	oklab(54.36% -0.0215 -0.1363)
OKLCH	oklch(54.36% 0.138 261)
XYZ	xyz(16.9192, 15.7540, 51.4293)
Luminance	0.1576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DBF #BF913F

analogous

#3FADBF #3F6DBF #513FBF

triadic

#3F6DBF #BF3F6D #6DBF3F

tetradic

#3F6DBF #BF3FAD #BF913F #3FBF51

square

#3F6DBF #BF3FAD #BF913F #3FBF51

split-complementary

#3F6DBF #BF513F #ADBF3F

monochromatic

#213863 #305391 #3F6DBF #6D90CF #9BB3DE

Accessibility & contrast

On white

5.06

#3F6DBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.15

#3F6DBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DBF

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DBF	#FFFFFF	#000000	##FFFFFF
##3F6DBF	1.00	5.06	4.15	5.06
#FFFFFF	5.06	1.00	21.00	1.00
#000000	4.15	21.00	1.00	21.00
##FFFFFF	5.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4675C2

Deuteranopia (green-blind)

#3169BD

Tritanopia (blue-blind)

#00808C

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3f6dbf;
/* rgb */ color: rgb(63, 109, 191);
/* oklch */ color: oklch(54.4% 0.138 261.0);

Tailwind

colors: {
  custom: {
    50: '#8296d3',
    500: '#3f6dbf',
    950: '#000000',
  },
}

SCSS

$custom: #3f6dbf;
$custom-light: #8296d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6dbf",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 191
  },
  "hsl": {
    "h": 218.438,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.54362,
    "c": 0.13798,
    "h": 261
  },
  "luminance": 0.15756
}

Semantic roles & 50–950 ramp

primary

#3F6DBF

secondary

#CAB590

accent

#A84EDA

background

#F8F9FD

surface

#F0F1FA

border

#CBCBD3

text

#0C0D14

muted

#7D7E83

Preview Lab

Preview with #3F6DBF

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

Preview Lab → · Contrast checker → · Palette generator →