#3F5CD0#3F5CD0

#3F5CD0 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.1% C 0.182 H 268.7°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CD0
RGB	rgb(63, 92, 208)
HSL	hsl(228, 61%, 53%)
HSV	hsv(228, 70%, 82%)
CMYK	cmyk(69.7%, 55.8%, 0%, 18.4%)
CIE-LAB	lab(43.16, 28.14, -63.16)
CIE-LCH	lch(43.16, 69.15, 294.02°)
OKLab	oklab(52.06% -0.0043 -0.1819)
OKLCH	oklch(52.06% 0.182 268.7)
XYZ	xyz(17.2583, 13.2634, 61.3128)
Luminance	0.1326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CD0 #D0B33F

analogous

#3FA4D0 #3F5CD0 #6A3FD0

triadic

#3F5CD0 #D03F5C #5CD03F

tetradic

#3F5CD0 #D03FA4 #D0B33F #3FD06A

square

#3F5CD0 #D03FA4 #D0B33F #3FD06A

split-complementary

#3F5CD0 #D06A3F #A4D03F

monochromatic

#1D2F77 #2943A9 #3F5CD0 #7086DC #A1AFE8

Accessibility & contrast

On white

5.75

#3F5CD0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#3F5CD0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CD0

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CD0	#FFFFFF	#000000	##FFFFFF
##3F5CD0	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DD4

Deuteranopia (green-blind)

#0060CE

Tritanopia (blue-blind)

#00788D

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5cd0;
/* rgb */ color: rgb(63, 92, 208);
/* oklch */ color: oklch(52.1% 0.182 268.7);

Tailwind

colors: {
  custom: {
    50: '#8689df',
    500: '#3f5cd0',
    950: '#000000',
  },
}

SCSS

$custom: #3f5cd0;
$custom-light: #8689df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5cd0",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 208
  },
  "hsl": {
    "h": 228,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.52059,
    "c": 0.18195,
    "h": 268.7
  },
  "luminance": 0.13265
}

Semantic roles & 50–950 ramp

primary

#3F5CD0

secondary

#D5C896

accent

#C444E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5CD0

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

Preview Lab → · Contrast checker → · Palette generator →