#3F6CBB#3F6CBB

#3F6CBB is a mid, vivid blue. Relative luminance 0.154; OKLCH L 53.9% C 0.134 H 260.8°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CBB
RGB	rgb(63, 108, 187)
HSL	hsl(218, 50%, 49%)
HSV	hsv(218, 66%, 73%)
CMYK	cmyk(66.3%, 42.2%, 0%, 26.7%)
CIE-LAB	lab(46.13, 10.42, -46.25)
CIE-LCH	lch(46.13, 47.41, 282.70°)
OKLab	oklab(53.89% -0.0213 -0.1319)
OKLCH	oklch(53.89% 0.134 260.8)
XYZ	xyz(16.3789, 15.3681, 49.1072)
Luminance	0.1537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CBB #BB8E3F

analogous

#3FAABB #3F6CBB #503FBB

triadic

#3F6CBB #BB3F6C #6CBB3F

tetradic

#3F6CBB #BB3FAA #BB8E3F #3FBB50

square

#3F6CBB #BB3FAA #BB8E3F #3FBB50

split-complementary

#3F6CBB #BB503F #AABB3F

monochromatic

#20375F #30528D #3F6CBB #6A8ECD #98B1DC

Accessibility & contrast

On white

5.15

#3F6CBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#3F6CBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CBB

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CBB	#FFFFFF	#000000	##FFFFFF
##3F6CBB	1.00	5.15	4.07	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4773BE

Deuteranopia (green-blind)

#3468B9

Tritanopia (blue-blind)

#007E8A

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3f6cbb;
/* rgb */ color: rgb(63, 108, 187);
/* oklch */ color: oklch(53.9% 0.134 260.8);

Tailwind

colors: {
  custom: {
    50: '#8195d0',
    500: '#3f6cbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f6cbb;
$custom-light: #8195d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6cbb",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 187
  },
  "hsl": {
    "h": 218.226,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.53889,
    "c": 0.13363,
    "h": 260.8
  },
  "luminance": 0.1537
}

Semantic roles & 50–950 ramp

primary

#3F6CBB

secondary

#C8B38E

accent

#A74FD9

background

#F8F9FC

surface

#F0F1F9

border

#CBCBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3F6CBB

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

Preview Lab → · Contrast checker → · Palette generator →