#3F5FD2#3F5FD2

#3F5FD2 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.8% C 0.181 H 267.9°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FD2
RGB	rgb(63, 95, 210)
HSL	hsl(227, 62%, 54%)
HSV	hsv(227, 70%, 82%)
CMYK	cmyk(70%, 54.8%, 0%, 17.6%)
CIE-LAB	lab(44.08, 26.95, -62.81)
CIE-LCH	lch(44.08, 68.35, 293.22°)
OKLab	oklab(52.8% -0.0066 -0.1808)
OKLCH	oklch(52.8% 0.181 267.9)
XYZ	xyz(17.7709, 13.8925, 62.7052)
Luminance	0.1389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FD2 #D2B23F

analogous

#3FA8D2 #3F5FD2 #683FD2

triadic

#3F5FD2 #D23F5F #5FD23F

tetradic

#3F5FD2 #D23FA8 #D2B23F #3FD268

square

#3F5FD2 #D23FA8 #D2B23F #3FD268

split-complementary

#3F5FD2 #D2683F #A8D23F

monochromatic

#1D317A #2845AC #3F5FD2 #7188DE #A2B2E9

Accessibility & contrast

On white

5.56

#3F5FD2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#3F5FD2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FD2

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FD2	#FFFFFF	#000000	##FFFFFF
##3F5FD2	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FD6

Deuteranopia (green-blind)

#0062D0

Tritanopia (blue-blind)

#007B8F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3f5fd2;
/* rgb */ color: rgb(63, 95, 210);
/* oklch */ color: oklch(52.8% 0.181 267.9);

Tailwind

colors: {
  custom: {
    50: '#868ce1',
    500: '#3f5fd2',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fd2;
$custom-light: #868ce1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fd2",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 210
  },
  "hsl": {
    "h": 226.939,
    "s": 62.025,
    "l": 53.529
  },
  "oklch": {
    "l": 0.52796,
    "c": 0.18096,
    "h": 267.9
  },
  "luminance": 0.13894
}

Semantic roles & 50–950 ramp

primary

#3F5FD2

secondary

#D6C897

accent

#C243E5

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0D0C15

muted

#7D7D83

Preview Lab

Preview with #3F5FD2

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

Preview Lab → · Contrast checker → · Palette generator →