#3F5ED5#3F5ED5

#3F5ED5 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.8% C 0.186 H 268.3°. Best body text is #FFFFFF at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#3F5ED5
RGB	rgb(63, 94, 213)
HSL	hsl(228, 64%, 54%)
HSV	hsv(228, 70%, 84%)
CMYK	cmyk(70.4%, 55.9%, 0%, 16.5%)
CIE-LAB	lab(44.04, 28.66, -64.60)
CIE-LCH	lch(44.04, 70.67, 293.93°)
OKLab	oklab(52.84% -0.0056 -0.1861)
OKLCH	oklch(52.84% 0.186 268.3)
XYZ	xyz(18.0587, 13.8644, 64.6623)
Luminance	0.1387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5ED5 #D5B63F

analogous

#3FA9D5 #3F5ED5 #6B3FD5

triadic

#3F5ED5 #D53F5E #5ED53F

tetradic

#3F5ED5 #D53FA9 #D5B63F #3FD56B

square

#3F5ED5 #D53FA9 #D5B63F #3FD56B

split-complementary

#3F5ED5 #D56B3F #A9D53F

monochromatic

#1C307E #2743B0 #3F5ED5 #7188E0 #A3B2EB

Accessibility & contrast

On white

5.57

#3F5ED5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#3F5ED5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5ED5

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5ED5	#FFFFFF	#000000	##FFFFFF
##3F5ED5	1.00	5.57	3.77	5.57
#FFFFFF	5.57	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FD9

Deuteranopia (green-blind)

#0061D3

Tritanopia (blue-blind)

#007B90

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3f5ed5;
/* rgb */ color: rgb(63, 94, 213);
/* oklch */ color: oklch(52.8% 0.186 268.3);

Tailwind

colors: {
  custom: {
    50: '#868be3',
    500: '#3f5ed5',
    950: '#000000',
  },
}

SCSS

$custom: #3f5ed5;
$custom-light: #868be3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5ed5",
  "rgb": {
    "r": 63,
    "g": 94,
    "b": 213
  },
  "hsl": {
    "h": 227.6,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.52835,
    "c": 0.18619,
    "h": 268.3
  },
  "luminance": 0.13866
}

Semantic roles & 50–950 ramp

primary

#3F5ED5

secondary

#D8CB98

accent

#C541E7

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0B15

muted

#7E7C84

Preview Lab

Preview with #3F5ED5

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

Preview Lab → · Contrast checker → · Palette generator →