#3F5FD0#3F5FD0

#3F5FD0 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.6% C 0.178 H 267.8°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FD0
RGB	rgb(63, 95, 208)
HSL	hsl(227, 61%, 53%)
HSV	hsv(227, 70%, 82%)
CMYK	cmyk(69.7%, 54.3%, 0%, 18.4%)
CIE-LAB	lab(43.94, 26.23, -61.90)
CIE-LCH	lch(43.94, 67.23, 292.97°)
OKLab	oklab(52.64% -0.0067 -0.1781)
OKLCH	oklch(52.64% 0.178 267.8)
XYZ	xyz(17.5233, 13.7935, 61.4012)
Luminance	0.1379 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FD0 #D0B03F

analogous

#3FA7D0 #3F5FD0 #683FD0

triadic

#3F5FD0 #D03F5F #5FD03F

tetradic

#3F5FD0 #D03FA7 #D0B03F #3FD068

square

#3F5FD0 #D03FA7 #D0B03F #3FD068

split-complementary

#3F5FD0 #D0683F #A7D03F

monochromatic

#1D3177 #2945A9 #3F5FD0 #7088DC #A1B1E8

Accessibility & contrast

On white

5.59

#3F5FD0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#3F5FD0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FD0

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FD0	#FFFFFF	#000000	##FFFFFF
##3F5FD0	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FD4

Deuteranopia (green-blind)

#0061CE

Tritanopia (blue-blind)

#007A8E

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3f5fd0;
/* rgb */ color: rgb(63, 95, 208);
/* oklch */ color: oklch(52.6% 0.178 267.8);

Tailwind

colors: {
  custom: {
    50: '#858cdf',
    500: '#3f5fd0',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fd0;
$custom-light: #858cdf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fd0",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 208
  },
  "hsl": {
    "h": 226.759,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.52643,
    "c": 0.17828,
    "h": 267.8
  },
  "luminance": 0.13795
}

Semantic roles & 50–950 ramp

primary

#3F5FD0

secondary

#D5C796

accent

#C144E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F5FD0

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

Preview Lab → · Contrast checker → · Palette generator →