#3F6FBE#3F6FBE

#3F6FBE is a mid, vivid blue. Relative luminance 0.161; OKLCH L 54.7% C 0.134 H 259.8°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F6FBE
RGB	rgb(63, 111, 190)
HSL	hsl(217, 50%, 50%)
HSV	hsv(217, 67%, 75%)
CMYK	cmyk(66.8%, 41.6%, 0%, 25.5%)
CIE-LAB	lab(47.16, 9.61, -46.35)
CIE-LCH	lch(47.16, 47.33, 281.72°)
OKLab	oklab(54.74% -0.0237 -0.1322)
OKLCH	oklch(54.74% 0.134 259.8)
XYZ	xyz(17.0253, 16.1417, 50.9236)
Luminance	0.1614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6FBE #BE8E3F

analogous

#3FAFBE #3F6FBE #4F3FBE

triadic

#3F6FBE #BE3F6F #6FBE3F

tetradic

#3F6FBE #BE3FAF #BE8E3F #3FBE4F

square

#3F6FBE #BE3FAF #BE8E3F #3FBE4F

split-complementary

#3F6FBE #BE4F3F #AFBE3F

monochromatic

#213962 #305490 #3F6FBE #6C91CE #9AB3DD

Accessibility & contrast

On white

4.97

#3F6FBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#3F6FBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6FBE

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6FBE	#FFFFFF	#000000	##FFFFFF
##3F6FBE	1.00	4.97	4.23	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A76C1

Deuteranopia (green-blind)

#376ABC

Tritanopia (blue-blind)

#00818D

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f6fbe;
/* rgb */ color: rgb(63, 111, 190);
/* oklch */ color: oklch(54.7% 0.134 259.8);

Tailwind

colors: {
  custom: {
    50: '#8197d2',
    500: '#3f6fbe',
    950: '#000000',
  },
}

SCSS

$custom: #3f6fbe;
$custom-light: #8197d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6fbe",
  "rgb": {
    "r": 63,
    "g": 111,
    "b": 190
  },
  "hsl": {
    "h": 217.323,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.54738,
    "c": 0.13428,
    "h": 259.8
  },
  "luminance": 0.16143
}

Semantic roles & 50–950 ramp

primary

#3F6FBE

secondary

#C9B38F

accent

#A54EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3F6FBE

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

Preview Lab → · Contrast checker → · Palette generator →