#3F6BD1#3F6BD1

#3F6BD1 is a mid, vivid blue. Relative luminance 0.162; OKLCH L 55.1% C 0.165 H 264.2°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BD1
RGB	rgb(63, 107, 209)
HSL	hsl(222, 61%, 53%)
HSV	hsv(222, 70%, 82%)
CMYK	cmyk(69.9%, 48.8%, 0%, 18%)
CIE-LAB	lab(47.20, 18.97, -57.19)
CIE-LCH	lch(47.20, 60.26, 288.35°)
OKLab	oklab(55.14% -0.0168 -0.1641)
OKLCH	oklch(55.14% 0.165 264.2)
XYZ	xyz(18.8122, 16.1737, 62.4396)
Luminance	0.1618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BD1 #D1A53F

analogous

#3FB4D1 #3F6BD1 #5C3FD1

triadic

#3F6BD1 #D13F6B #6BD13F

tetradic

#3F6BD1 #D13FB4 #D1A53F #3FD15C

square

#3F6BD1 #D13FB4 #D1A53F #3FD15C

split-complementary

#3F6BD1 #D15C3F #B4D13F

monochromatic

#1D3979 #2950AA #3F6BD1 #7091DD #A2B7E9

Accessibility & contrast

On white

4.96

#3F6BD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#3F6BD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BD1

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BD1	#FFFFFF	#000000	##FFFFFF
##3F6BD1	1.00	4.96	4.24	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3277D5

Deuteranopia (green-blind)

#006ACF

Tritanopia (blue-blind)

#008394

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f6bd1;
/* rgb */ color: rgb(63, 107, 209);
/* oklch */ color: oklch(55.1% 0.165 264.2);

Tailwind

colors: {
  custom: {
    50: '#8594e0',
    500: '#3f6bd1',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bd1;
$custom-light: #8594e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bd1",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 209
  },
  "hsl": {
    "h": 221.918,
    "s": 61.345,
    "l": 53.333
  },
  "oklch": {
    "l": 0.55142,
    "c": 0.16497,
    "h": 264.2
  },
  "luminance": 0.16176
}

Semantic roles & 50–950 ramp

primary

#3F6BD1

secondary

#D5C297

accent

#B443E4

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6BD1

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

Preview Lab → · Contrast checker → · Palette generator →