#3F5DCC#3F5DCC

#3F5DCC is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.9% C 0.175 H 268.3°. Best body text is #FFFFFF at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F5DCC
RGB	rgb(63, 93, 204)
HSL	hsl(227, 58%, 52%)
HSV	hsv(227, 69%, 80%)
CMYK	cmyk(69.1%, 54.4%, 0%, 20%)
CIE-LAB	lab(43.13, 26.07, -60.91)
CIE-LCH	lch(43.13, 66.25, 293.18°)
OKLab	oklab(51.94% -0.0053 -0.1753)
OKLCH	oklch(51.94% 0.175 268.3)
XYZ	xyz(16.8596, 13.2434, 58.7828)
Luminance	0.1325 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5DCC #CCAE3F

analogous

#3FA4CC #3F5DCC #673FCC

triadic

#3F5DCC #CC3F5D #5DCC3F

tetradic

#3F5DCC #CC3FA4 #CCAE3F #3FCC67

square

#3F5DCC #CC3FA4 #CCAE3F #3FCC67

split-complementary

#3F5DCC #CC673F #A4CC3F

monochromatic

#1E3072 #2B45A3 #3F5DCC #6F86D9 #A0AFE6

Accessibility & contrast

On white

5.76

#3F5DCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#3F5DCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5DCC

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5DCC	#FFFFFF	#000000	##FFFFFF
##3F5DCC	1.00	5.76	3.65	5.76
#FFFFFF	5.76	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DD0

Deuteranopia (green-blind)

#0060CA

Tritanopia (blue-blind)

#00788B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5dcc;
/* rgb */ color: rgb(63, 93, 204);
/* oklch */ color: oklch(51.9% 0.175 268.3);

Tailwind

colors: {
  custom: {
    50: '#858adc',
    500: '#3f5dcc',
    950: '#000000',
  },
}

SCSS

$custom: #3f5dcc;
$custom-light: #858adc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5dcc",
  "rgb": {
    "r": 63,
    "g": 93,
    "b": 204
  },
  "hsl": {
    "h": 227.234,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.51945,
    "c": 0.17534,
    "h": 268.3
  },
  "luminance": 0.13245
}

Semantic roles & 50–950 ramp

primary

#3F5DCC

secondary

#D2C595

accent

#C047E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5DCC

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

Preview Lab → · Contrast checker → · Palette generator →