#3F5DCF#3F5DCF

#3F5DCF is a mid, vivid blue. Relative luminance 0.134; OKLCH L 52.2% C 0.179 H 268.4°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F5DCF
RGB	rgb(63, 93, 207)
HSL	hsl(228, 60%, 53%)
HSV	hsv(228, 70%, 81%)
CMYK	cmyk(69.6%, 55.1%, 0%, 18.8%)
CIE-LAB	lab(43.34, 27.15, -62.28)
CIE-LCH	lch(43.34, 67.94, 293.55°)
OKLab	oklab(52.18% -0.0051 -0.1793)
OKLCH	oklch(52.18% 0.179 268.4)
XYZ	xyz(17.2229, 13.3887, 60.6960)
Luminance	0.1339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5DCF #CFB13F

analogous

#3FA5CF #3F5DCF #693FCF

triadic

#3F5DCF #CF3F5D #5DCF3F

tetradic

#3F5DCF #CF3FA5 #CFB13F #3FCF69

square

#3F5DCF #CF3FA5 #CFB13F #3FCF69

split-complementary

#3F5DCF #CF693F #A5CF3F

monochromatic

#1E3076 #2A44A7 #3F5DCF #7086DB #A1B0E7

Accessibility & contrast

On white

5.71

#3F5DCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#3F5DCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5DCF

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5DCF	#FFFFFF	#000000	##FFFFFF
##3F5DCF	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DD3

Deuteranopia (green-blind)

#0060CD

Tritanopia (blue-blind)

#00798D

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5dcf;
/* rgb */ color: rgb(63, 93, 207);
/* oklch */ color: oklch(52.2% 0.179 268.4);

Tailwind

colors: {
  custom: {
    50: '#858ade',
    500: '#3f5dcf',
    950: '#000000',
  },
}

SCSS

$custom: #3f5dcf;
$custom-light: #858ade;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5dcf",
  "rgb": {
    "r": 63,
    "g": 93,
    "b": 207
  },
  "hsl": {
    "h": 227.5,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.52175,
    "c": 0.17938,
    "h": 268.4
  },
  "luminance": 0.1339
}

Semantic roles & 50–950 ramp

primary

#3F5DCF

secondary

#D4C796

accent

#C245E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5DCF

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

Preview Lab → · Contrast checker → · Palette generator →