#3F7ACF#3F7ACF

#3F7ACF is a mid, vivid blue. Relative luminance 0.195; OKLCH L 58.2% C 0.145 H 257.8°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#3F7ACF
RGB	rgb(63, 122, 207)
HSL	hsl(215, 60%, 53%)
HSV	hsv(215, 70%, 81%)
CMYK	cmyk(69.6%, 41.1%, 0%, 18.8%)
CIE-LAB	lab(51.24, 8.88, -49.58)
CIE-LCH	lch(51.24, 50.37, 280.15°)
OKLab	oklab(58.21% -0.0307 -0.1415)
OKLCH	oklch(58.21% 0.145 257.8)
XYZ	xyz(20.2678, 19.4787, 61.7110)
Luminance	0.1948 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7ACF #CF943F

analogous

#3FC2CF #3F7ACF #4C3FCF

triadic

#3F7ACF #CF3F7A #7ACF3F

tetradic

#3F7ACF #CF3FC2 #CF943F #3FCF4C

square

#3F7ACF #CF3FC2 #CF943F #3FCF4C

split-complementary

#3F7ACF #CF4C3F #C2CF3F

monochromatic

#1E4276 #2A5DA7 #3F7ACF #709CDB #A1BEE7

Accessibility & contrast

On white

4.29

#3F7ACF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#3F7ACF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7ACF

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7ACF	#FFFFFF	#000000	##000000
##3F7ACF	1.00	4.29	4.90	4.90
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5281D2

Deuteranopia (green-blind)

#3B74CD

Tritanopia (blue-blind)

#008E9A

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f7acf;
/* rgb */ color: rgb(63, 122, 207);
/* oklch */ color: oklch(58.2% 0.145 257.8);

Tailwind

colors: {
  custom: {
    50: '#849fde',
    500: '#3f7acf',
    950: '#000000',
  },
}

SCSS

$custom: #3f7acf;
$custom-light: #849fde;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7acf",
  "rgb": {
    "r": 63,
    "g": 122,
    "b": 207
  },
  "hsl": {
    "h": 215.417,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.58214,
    "c": 0.14478,
    "h": 257.8
  },
  "luminance": 0.19481
}

Semantic roles & 50–950 ramp

primary

#3F7ACF

secondary

#D4BB96

accent

#A245E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F7ACF

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

Preview Lab → · Contrast checker → · Palette generator →