#3F6FCA#3F6FCA

#3F6FCA is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.5% C 0.151 H 261.8°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#3F6FCA
RGB	rgb(63, 111, 202)
HSL	hsl(219, 57%, 52%)
HSV	hsv(219, 69%, 79%)
CMYK	cmyk(68.8%, 45%, 0%, 20.8%)
CIE-LAB	lab(47.86, 13.92, -52.12)
CIE-LCH	lch(47.86, 53.95, 284.95°)
OKLab	oklab(55.51% -0.0214 -0.1491)
OKLCH	oklch(55.51% 0.151 261.8)
XYZ	xyz(18.3912, 16.6880, 58.1175)
Luminance	0.1669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6FCA #CA9A3F

analogous

#3FB4CA #3F6FCA #553FCA

triadic

#3F6FCA #CA3F6F #6FCA3F

tetradic

#3F6FCA #CA3FB4 #CA9A3F #3FCA55

square

#3F6FCA #CA3FB4 #CA9A3F #3FCA55

split-complementary

#3F6FCA #CA553F #B4CA3F

monochromatic

#1F3B70 #2C54A0 #3F6FCA #6F93D7 #9FB7E4

Accessibility & contrast

On white

4.84

#3F6FCA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#3F6FCA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6FCA

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6FCA	#FFFFFF	#000000	##FFFFFF
##3F6FCA	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4278CD

Deuteranopia (green-blind)

#276CC8

Tritanopia (blue-blind)

#008493

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f6fca;
/* rgb */ color: rgb(63, 111, 202);
/* oklch */ color: oklch(55.5% 0.151 261.8);

Tailwind

colors: {
  custom: {
    50: '#8497db',
    500: '#3f6fca',
    950: '#000000',
  },
}

SCSS

$custom: #3f6fca;
$custom-light: #8497db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6fca",
  "rgb": {
    "r": 63,
    "g": 111,
    "b": 202
  },
  "hsl": {
    "h": 219.281,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.5551,
    "c": 0.15067,
    "h": 261.8
  },
  "luminance": 0.1669
}

Semantic roles & 50–950 ramp

primary

#3F6FCA

secondary

#D1BC94

accent

#AB48E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6FCA

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

Preview Lab → · Contrast checker → · Palette generator →