#3F6EB3#3F6EB3

#3F6EB3 is a mid, vivid blue. Relative luminance 0.155; OKLCH L 53.8% C 0.120 H 258.0°. Best body text is #FFFFFF at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#3F6EB3
RGB	rgb(63, 110, 179)
HSL	hsl(216, 48%, 47%)
HSV	hsv(216, 65%, 70%)
CMYK	cmyk(64.8%, 38.5%, 0%, 29.8%)
CIE-LAB	lab(46.26, 6.32, -41.40)
CIE-LCH	lch(46.26, 41.88, 278.68°)
OKLab	oklab(53.84% -0.0251 -0.1177)
OKLCH	oklch(53.84% 0.12 258)
XYZ	xyz(15.7596, 15.4618, 44.7930)
Luminance	0.1546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6EB3 #B3843F

analogous

#3FA8B3 #3F6EB3 #4A3FB3

triadic

#3F6EB3 #B33F6E #6EB33F

tetradic

#3F6EB3 #B33FA8 #B3843F #3FB34A

square

#3F6EB3 #B33FA8 #B3843F #3FB34A

split-complementary

#3F6EB3 #B34A3F #A8B33F

monochromatic

#1F3658 #2F5286 #3F6EB3 #668EC9 #93B0D9

Accessibility & contrast

On white

5.13

#3F6EB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.09

#3F6EB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6EB3

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6EB3	#FFFFFF	#000000	##FFFFFF
##3F6EB3	1.00	5.13	4.09	5.13
#FFFFFF	5.13	1.00	21.00	1.00
#000000	4.09	21.00	1.00	21.00
##FFFFFF	5.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5073B6

Deuteranopia (green-blind)

#3F69B2

Tritanopia (blue-blind)

#007E88

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3f6eb3;
/* rgb */ color: rgb(63, 110, 179);
/* oklch */ color: oklch(53.8% 0.120 258.0);

Tailwind

colors: {
  custom: {
    50: '#7f97ca',
    500: '#3f6eb3',
    950: '#000000',
  },
}

SCSS

$custom: #3f6eb3;
$custom-light: #7f97ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6eb3",
  "rgb": {
    "r": 63,
    "g": 110,
    "b": 179
  },
  "hsl": {
    "h": 215.69,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53841,
    "c": 0.12034,
    "h": 258
  },
  "luminance": 0.15463
}

Semantic roles & 50–950 ramp

primary

#3F6EB3

secondary

#C4AD89

accent

#A150D8

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3F6EB3

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

Preview Lab → · Contrast checker → · Palette generator →