#3F5ED0#3F5ED0

#3F5ED0 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.4% C 0.180 H 268.1°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F5ED0
RGB	rgb(63, 94, 208)
HSL	hsl(227, 61%, 53%)
HSV	hsv(227, 70%, 82%)
CMYK	cmyk(69.7%, 54.8%, 0%, 18.4%)
CIE-LAB	lab(43.67, 26.87, -62.32)
CIE-LCH	lch(43.67, 67.87, 293.32°)
OKLab	oklab(52.45% -0.0059 -0.1794)
OKLCH	oklch(52.45% 0.18 268.1)
XYZ	xyz(17.4338, 13.6145, 61.3714)
Luminance	0.1362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5ED0 #D0B13F

analogous

#3FA7D0 #3F5ED0 #683FD0

triadic

#3F5ED0 #D03F5E #5ED03F

tetradic

#3F5ED0 #D03FA7 #D0B13F #3FD068

square

#3F5ED0 #D03FA7 #D0B13F #3FD068

split-complementary

#3F5ED0 #D0683F #A7D03F

monochromatic

#1D3077 #2944A9 #3F5ED0 #7087DC #A1B0E8

Accessibility & contrast

On white

5.64

#3F5ED0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#3F5ED0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5ED0

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5ED0	#FFFFFF	#000000	##FFFFFF
##3F5ED0	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ED4

Deuteranopia (green-blind)

#0061CE

Tritanopia (blue-blind)

#007A8E

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3f5ed0;
/* rgb */ color: rgb(63, 94, 208);
/* oklch */ color: oklch(52.4% 0.180 268.1);

Tailwind

colors: {
  custom: {
    50: '#858bdf',
    500: '#3f5ed0',
    950: '#000000',
  },
}

SCSS

$custom: #3f5ed0;
$custom-light: #858bdf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5ed0",
  "rgb": {
    "r": 63,
    "g": 94,
    "b": 208
  },
  "hsl": {
    "h": 227.172,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.52447,
    "c": 0.17951,
    "h": 268.1
  },
  "luminance": 0.13616
}

Semantic roles & 50–950 ramp

primary

#3F5ED0

secondary

#D5C796

accent

#C244E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5ED0

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

Preview Lab → · Contrast checker → · Palette generator →