#3F7BDC#3F7BDC

#3F7BDC is a mid, vivid blue. Relative luminance 0.204; OKLCH L 59.3% C 0.161 H 259.6°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BDC
RGB	rgb(63, 123, 220)
HSL	hsl(217, 69%, 55%)
HSV	hsv(217, 71%, 86%)
CMYK	cmyk(71.4%, 44.1%, 0%, 13.7%)
CIE-LAB	lab(52.27, 12.93, -55.29)
CIE-LCH	lch(52.27, 56.78, 283.17°)
OKLab	oklab(59.25% -0.0291 -0.1582)
OKLCH	oklch(59.25% 0.161 259.6)
XYZ	xyz(22.0465, 20.3876, 70.4696)
Luminance	0.2039 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BDC #DCA03F

analogous

#3FC9DC #3F7BDC #513FDC

triadic

#3F7BDC #DC3F7B #7BDC3F

tetradic

#3F7BDC #DC3FC9 #DCA03F #3FDC51

square

#3F7BDC #DC3FC9 #DCA03F #3FDC51

split-complementary

#3F7BDC #DC513F #C9DC3F

monochromatic

#194388 #225DBC #3F7BDC #739FE5 #A7C2EF

Accessibility & contrast

On white

4.14

#3F7BDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#3F7BDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BDC

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BDC	#FFFFFF	#000000	##000000
##3F7BDC	1.00	4.14	5.08	5.08
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B84E0

Deuteranopia (green-blind)

#2C76DA

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3f7bdc;
/* rgb */ color: rgb(63, 123, 220);
/* oklch */ color: oklch(59.3% 0.161 259.6);

Tailwind

colors: {
  custom: {
    50: '#87a0e7',
    500: '#3f7bdc',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bdc;
$custom-light: #87a0e7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bdc",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 220
  },
  "hsl": {
    "h": 217.07,
    "s": 69.163,
    "l": 55.49
  },
  "oklch": {
    "l": 0.59253,
    "c": 0.1609,
    "h": 259.6
  },
  "luminance": 0.2039
}

Semantic roles & 50–950 ramp

primary

#3F7BDC

secondary

#DCC39B

accent

#A93CEC

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #3F7BDC

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

Preview Lab → · Contrast checker → · Palette generator →