#3F6BD5#3F6BD5

#3F6BD5 is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.4% C 0.170 H 264.5°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BD5
RGB	rgb(63, 107, 213)
HSL	hsl(222, 64%, 54%)
HSV	hsv(222, 70%, 84%)
CMYK	cmyk(70.4%, 49.8%, 0%, 16.5%)
CIE-LAB	lab(47.46, 20.41, -59.06)
CIE-LCH	lch(47.46, 62.48, 289.07°)
OKLab	oklab(55.42% -0.0163 -0.1696)
OKLCH	oklch(55.42% 0.17 264.5)
XYZ	xyz(19.3136, 16.3742, 65.0806)
Luminance	0.1638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BD5 #D5A93F

analogous

#3FB6D5 #3F6BD5 #5E3FD5

triadic

#3F6BD5 #D53F6B #6BD53F

tetradic

#3F6BD5 #D53FB6 #D5A93F #3FD55E

square

#3F6BD5 #D53FB6 #D5A93F #3FD55E

split-complementary

#3F6BD5 #D55E3F #B6D53F

monochromatic

#1C387E #274FB0 #3F6BD5 #7192E0 #A3B8EB

Accessibility & contrast

On white

4.91

#3F6BD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#3F6BD5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BD5

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BD5	#FFFFFF	#000000	##FFFFFF
##3F6BD5	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D78D9

Deuteranopia (green-blind)

#006AD3

Tritanopia (blue-blind)

#008496

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f6bd5;
/* rgb */ color: rgb(63, 107, 213);
/* oklch */ color: oklch(55.4% 0.170 264.5);

Tailwind

colors: {
  custom: {
    50: '#8694e3',
    500: '#3f6bd5',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bd5;
$custom-light: #8694e3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bd5",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 213
  },
  "hsl": {
    "h": 222.4,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.55424,
    "c": 0.17038,
    "h": 264.5
  },
  "luminance": 0.16376
}

Semantic roles & 50–950 ramp

primary

#3F6BD5

secondary

#D8C598

accent

#B641E7

background

#F8F9FE

surface

#F0F1FC

border

#CBCBD5

text

#0D0D15

muted

#7D7E84

Preview Lab

Preview with #3F6BD5

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

Preview Lab → · Contrast checker → · Palette generator →