#3F6DB0#3F6DB0

#3F6DB0 is a mid, moderate blue. Relative luminance 0.151; OKLCH L 53.4% C 0.117 H 257.8°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DB0
RGB	rgb(63, 109, 176)
HSL	hsl(216, 47%, 47%)
HSV	hsv(216, 64%, 69%)
CMYK	cmyk(64.2%, 38.1%, 0%, 31%)
CIE-LAB	lab(45.81, 5.89, -40.37)
CIE-LCH	lch(45.81, 40.80, 278.30°)
OKLab	oklab(53.44% -0.0248 -0.1147)
OKLCH	oklch(53.44% 0.117 257.8)
XYZ	xyz(15.3522, 15.1272, 43.1767)
Luminance	0.1513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DB0 #B0823F

analogous

#3FA6B0 #3F6DB0 #4A3FB0

triadic

#3F6DB0 #B03F6D #6DB03F

tetradic

#3F6DB0 #B03FA6 #B0823F #3FB04A

square

#3F6DB0 #B03FA6 #B0823F #3FB04A

split-complementary

#3F6DB0 #B04A3F #A6B03F

monochromatic

#1F3556 #2F5183 #3F6DB0 #658DC8 #92AED8

Accessibility & contrast

On white

5.22

#3F6DB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#3F6DB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DB0

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DB0	#FFFFFF	#000000	##FFFFFF
##3F6DB0	1.00	5.22	4.03	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5072B3

Deuteranopia (green-blind)

#4068AF

Tritanopia (blue-blind)

#007C86

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f6db0;
/* rgb */ color: rgb(63, 109, 176);
/* oklch */ color: oklch(53.4% 0.117 257.8);

Tailwind

colors: {
  custom: {
    50: '#7f96c8',
    500: '#3f6db0',
    950: '#000000',
  },
}

SCSS

$custom: #3f6db0;
$custom-light: #7f96c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6db0",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 176
  },
  "hsl": {
    "h": 215.575,
    "s": 47.28,
    "l": 46.863
  },
  "oklch": {
    "l": 0.53436,
    "c": 0.11733,
    "h": 257.8
  },
  "luminance": 0.15129
}

Semantic roles & 50–950 ramp

primary

#3F6DB0

secondary

#C3AB88

accent

#A051D7

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3F6DB0

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

Preview Lab → · Contrast checker → · Palette generator →