#3F6BB9#3F6BB9

#3F6BB9 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 53.5% C 0.132 H 261.0°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BB9
RGB	rgb(63, 107, 185)
HSL	hsl(218, 49%, 49%)
HSV	hsv(218, 66%, 73%)
CMYK	cmyk(65.9%, 42.2%, 0%, 27.5%)
CIE-LAB	lab(45.73, 10.33, -45.73)
CIE-LCH	lch(45.73, 46.88, 282.73°)
OKLab	oklab(53.54% -0.0207 -0.1304)
OKLCH	oklch(53.54% 0.132 261)
XYZ	xyz(16.0614, 15.0734, 47.9525)
Luminance	0.1507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BB9 #B98D3F

analogous

#3FA8B9 #3F6BB9 #503FB9

triadic

#3F6BB9 #B93F6B #6BB93F

tetradic

#3F6BB9 #B93FA8 #B98D3F #3FB950

square

#3F6BB9 #B93FA8 #B98D3F #3FB950

split-complementary

#3F6BB9 #B9503F #A8B93F

monochromatic

#20365E #2F518B #3F6BB9 #698DCC #97B0DC

Accessibility & contrast

On white

5.23

#3F6BB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#3F6BB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BB9

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BB9	#FFFFFF	#000000	##FFFFFF
##3F6BB9	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4772BC

Deuteranopia (green-blind)

#3467B7

Tritanopia (blue-blind)

#007D89

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f6bb9;
/* rgb */ color: rgb(63, 107, 185);
/* oklch */ color: oklch(53.5% 0.132 261.0);

Tailwind

colors: {
  custom: {
    50: '#8194ce',
    500: '#3f6bb9',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bb9;
$custom-light: #8194ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bb9",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 185
  },
  "hsl": {
    "h": 218.361,
    "s": 49.194,
    "l": 48.627
  },
  "oklch": {
    "l": 0.53543,
    "c": 0.13205,
    "h": 261
  },
  "luminance": 0.15075
}

Semantic roles & 50–950 ramp

primary

#3F6BB9

secondary

#C7B28D

accent

#A74FD9

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3F6BB9

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

Preview Lab → · Contrast checker → · Palette generator →