#3F6DB2#3F6DB2

#3F6DB2 is a mid, vivid blue. Relative luminance 0.152; OKLCH L 53.6% C 0.120 H 258.3°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DB2
RGB	rgb(63, 109, 178)
HSL	hsl(216, 48%, 47%)
HSV	hsv(216, 65%, 70%)
CMYK	cmyk(64.6%, 38.8%, 0%, 30.2%)
CIE-LAB	lab(45.92, 6.59, -41.36)
CIE-LCH	lch(45.92, 41.89, 279.06°)
OKLab	oklab(53.56% -0.0243 -0.1176)
OKLCH	oklch(53.56% 0.12 258.3)
XYZ	xyz(15.5516, 15.2069, 44.2265)
Luminance	0.1521 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DB2 #B2843F

analogous

#3FA7B2 #3F6DB2 #4B3FB2

triadic

#3F6DB2 #B23F6D #6DB23F

tetradic

#3F6DB2 #B23FA7 #B2843F #3FB24B

square

#3F6DB2 #B23FA7 #B2843F #3FB24B

split-complementary

#3F6DB2 #B24B3F #A7B23F

monochromatic

#1F3658 #2F5185 #3F6DB2 #668DC9 #93AFD9

Accessibility & contrast

On white

5.20

#3F6DB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#3F6DB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DB2

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DB2	#FFFFFF	#000000	##FFFFFF
##3F6DB2	1.00	5.20	4.04	5.20
#FFFFFF	5.20	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F73B5

Deuteranopia (green-blind)

#3E68B1

Tritanopia (blue-blind)

#007D87

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3f6db2;
/* rgb */ color: rgb(63, 109, 178);
/* oklch */ color: oklch(53.6% 0.120 258.3);

Tailwind

colors: {
  custom: {
    50: '#7f96c9',
    500: '#3f6db2',
    950: '#000000',
  },
}

SCSS

$custom: #3f6db2;
$custom-light: #7f96c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6db2",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 178
  },
  "hsl": {
    "h": 216,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53556,
    "c": 0.12007,
    "h": 258.3
  },
  "luminance": 0.15208
}

Semantic roles & 50–950 ramp

primary

#3F6DB2

secondary

#C4AC89

accent

#A150D7

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3F6DB2

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

Preview Lab → · Contrast checker → · Palette generator →