#3F71CD#3F71CD

#3F71CD is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.1% C 0.152 H 261.4°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F71CD
RGB	rgb(63, 113, 205)
HSL	hsl(219, 59%, 53%)
HSV	hsv(219, 69%, 80%)
CMYK	cmyk(69.3%, 44.9%, 0%, 19.6%)
CIE-LAB	lab(48.60, 13.75, -52.66)
CIE-LCH	lch(48.60, 54.42, 284.63°)
OKLab	oklab(56.14% -0.0227 -0.1507)
OKLCH	oklch(56.14% 0.152 261.4)
XYZ	xyz(18.9705, 17.2728, 60.0800)
Luminance	0.1727 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F71CD #CD9B3F

analogous

#3FB8CD #3F71CD #543FCD

triadic

#3F71CD #CD3F71 #71CD3F

tetradic

#3F71CD #CD3FB8 #CD9B3F #3FCD54

square

#3F71CD #CD3FB8 #CD9B3F #3FCD54

split-complementary

#3F71CD #CD543F #B8CD3F

monochromatic

#1E3C74 #2B55A4 #3F71CD #7095DA #A0B9E6

Accessibility & contrast

On white

4.71

#3F71CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#3F71CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F71CD

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F71CD	#FFFFFF	#000000	##FFFFFF
##3F71CD	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#437AD0

Deuteranopia (green-blind)

#286DCB

Tritanopia (blue-blind)

#008695

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f71cd;
/* rgb */ color: rgb(63, 113, 205);
/* oklch */ color: oklch(56.1% 0.152 261.4);

Tailwind

colors: {
  custom: {
    50: '#8499dd',
    500: '#3f71cd',
    950: '#000000',
  },
}

SCSS

$custom: #3f71cd;
$custom-light: #8499dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f71cd",
  "rgb": {
    "r": 63,
    "g": 113,
    "b": 205
  },
  "hsl": {
    "h": 218.873,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.56135,
    "c": 0.15239,
    "h": 261.4
  },
  "luminance": 0.17275
}

Semantic roles & 50–950 ramp

primary

#3F71CD

secondary

#D3BD95

accent

#AB46E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F71CD

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

Preview Lab → · Contrast checker → · Palette generator →