#3F5CD3#3F5CD3

#3F5CD3 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 52.3% C 0.186 H 268.7°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CD3
RGB	rgb(63, 92, 211)
HSL	hsl(228, 63%, 54%)
HSV	hsv(228, 70%, 83%)
CMYK	cmyk(70.1%, 56.4%, 0%, 17.3%)
CIE-LAB	lab(43.38, 29.22, -64.52)
CIE-LCH	lch(43.38, 70.83, 294.36°)
OKLab	oklab(52.29% -0.0042 -0.1859)
OKLCH	oklch(52.29% 0.186 268.7)
XYZ	xyz(17.6309, 13.4124, 63.2751)
Luminance	0.1341 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CD3 #D3B63F

analogous

#3FA6D3 #3F5CD3 #6C3FD3

triadic

#3F5CD3 #D33F5C #5CD33F

tetradic

#3F5CD3 #D33FA6 #D3B63F #3FD36C

square

#3F5CD3 #D33FA6 #D3B63F #3FD36C

split-complementary

#3F5CD3 #D36C3F #A6D33F

monochromatic

#1C2F7B #2842AD #3F5CD3 #7186DE #A3B1EA

Accessibility & contrast

On white

5.70

#3F5CD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#3F5CD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CD3

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CD3	#FFFFFF	#000000	##FFFFFF
##3F5CD3	1.00	5.70	3.68	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ED7

Deuteranopia (green-blind)

#0060D1

Tritanopia (blue-blind)

#00798E

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5cd3;
/* rgb */ color: rgb(63, 92, 211);
/* oklch */ color: oklch(52.3% 0.186 268.7);

Tailwind

colors: {
  custom: {
    50: '#8689e1',
    500: '#3f5cd3',
    950: '#000000',
  },
}

SCSS

$custom: #3f5cd3;
$custom-light: #8689e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5cd3",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 211
  },
  "hsl": {
    "h": 228.243,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.52294,
    "c": 0.18596,
    "h": 268.7
  },
  "luminance": 0.13414
}

Semantic roles & 50–950 ramp

primary

#3F5CD3

secondary

#D7CA97

accent

#C642E6

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #3F5CD3

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

Preview Lab → · Contrast checker → · Palette generator →