#3F5FDA#3F5FDA

#3F5FDA is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.4% C 0.192 H 268.1°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FDA
RGB	rgb(63, 95, 218)
HSL	hsl(228, 68%, 55%)
HSV	hsv(228, 71%, 85%)
CMYK	cmyk(71.1%, 56.4%, 0%, 14.5%)
CIE-LAB	lab(44.66, 29.81, -66.44)
CIE-LCH	lch(44.66, 72.82, 294.17°)
OKLab	oklab(53.42% -0.0062 -0.1915)
OKLCH	oklch(53.42% 0.192 268.1)
XYZ	xyz(18.7926, 14.3012, 68.0861)
Luminance	0.1430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FDA #DABA3F

analogous

#3FACDA #3F5FDA #6C3FDA

triadic

#3F5FDA #DA3F5F #5FDA3F

tetradic

#3F5FDA #DA3FAC #DABA3F #3FDA6C

square

#3F5FDA #DA3FAC #DABA3F #3FDA6C

split-complementary

#3F5FDA #DA6C3F #ACDA3F

monochromatic

#1A3085 #2442B8 #3F5FDA #728AE4 #A6B5EE

Accessibility & contrast

On white

5.44

#3F5FDA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#3F5FDA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FDA

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FDA	#FFFFFF	#000000	##FFFFFF
##3F5FDA	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0071DE

Deuteranopia (green-blind)

#0063D8

Tritanopia (blue-blind)

#007D93

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3f5fda;
/* rgb */ color: rgb(63, 95, 218);
/* oklch */ color: oklch(53.4% 0.192 268.1);

Tailwind

colors: {
  custom: {
    50: '#878ce6',
    500: '#3f5fda',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fda;
$custom-light: #878ce6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fda",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 218
  },
  "hsl": {
    "h": 227.613,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.53418,
    "c": 0.1916,
    "h": 268.1
  },
  "luminance": 0.14303
}

Semantic roles & 50–950 ramp

primary

#3F5FDA

secondary

#DBCD9A

accent

#C73DEB

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F5FDA

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

Preview Lab → · Contrast checker → · Palette generator →