#3F6CB0#3F6CB0

#3F6CB0 is a mid, moderate blue. Relative luminance 0.149; OKLCH L 53.2% C 0.118 H 258.4°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CB0
RGB	rgb(63, 108, 176)
HSL	hsl(216, 47%, 47%)
HSV	hsv(216, 64%, 69%)
CMYK	cmyk(64.2%, 38.6%, 0%, 31%)
CIE-LAB	lab(45.52, 6.51, -40.83)
CIE-LCH	lch(45.52, 41.35, 279.06°)
OKLab	oklab(53.21% -0.0237 -0.116)
OKLCH	oklch(53.21% 0.118 258.4)
XYZ	xyz(15.2461, 14.9150, 43.1413)
Luminance	0.1492 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CB0 #B0833F

analogous

#3FA5B0 #3F6CB0 #4B3FB0

triadic

#3F6CB0 #B03F6C #6CB03F

tetradic

#3F6CB0 #B03FA5 #B0833F #3FB04B

square

#3F6CB0 #B03FA5 #B0833F #3FB04B

split-complementary

#3F6CB0 #B04B3F #A5B03F

monochromatic

#1F3556 #2F5083 #3F6CB0 #658CC8 #92AED8

Accessibility & contrast

On white

5.27

#3F6CB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#3F6CB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CB0

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CB0	#FFFFFF	#000000	##FFFFFF
##3F6CB0	1.00	5.27	3.98	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E71B3

Deuteranopia (green-blind)

#3E67AF

Tritanopia (blue-blind)

#007B85

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f6cb0;
/* rgb */ color: rgb(63, 108, 176);
/* oklch */ color: oklch(53.2% 0.118 258.4);

Tailwind

colors: {
  custom: {
    50: '#7f95c8',
    500: '#3f6cb0',
    950: '#000000',
  },
}

SCSS

$custom: #3f6cb0;
$custom-light: #7f95c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6cb0",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 176
  },
  "hsl": {
    "h": 216.106,
    "s": 47.28,
    "l": 46.863
  },
  "oklch": {
    "l": 0.53211,
    "c": 0.11844,
    "h": 258.4
  },
  "luminance": 0.14916
}

Semantic roles & 50–950 ramp

primary

#3F6CB0

secondary

#C3AB88

accent

#A251D7

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3F6CB0

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

Preview Lab → · Contrast checker → · Palette generator →