#3F5CC8#3F5CC8

#3F5CC8 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.4% C 0.171 H 268.4°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CC8
RGB	rgb(63, 92, 200)
HSL	hsl(227, 55%, 52%)
HSV	hsv(227, 69%, 78%)
CMYK	cmyk(68.5%, 54%, 0%, 21.6%)
CIE-LAB	lab(42.58, 25.28, -59.49)
CIE-LCH	lch(42.58, 64.63, 293.02°)
OKLab	oklab(51.44% -0.0047 -0.1711)
OKLCH	oklch(51.44% 0.171 268.4)
XYZ	xyz(16.2988, 12.8796, 56.2594)
Luminance	0.1288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CC8 #C8AB3F

analogous

#3FA1C8 #3F5CC8 #673FC8

triadic

#3F5CC8 #C83F5C #5CC83F

tetradic

#3F5CC8 #C83FA1 #C8AB3F #3FC867

square

#3F5CC8 #C83FA1 #C8AB3F #3FC867

split-complementary

#3F5CC8 #C8673F #A1C83F

monochromatic

#1F306D #2D459D #3F5CC8 #6F84D6 #9EADE3

Accessibility & contrast

On white

5.87

#3F5CC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#3F5CC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CC8

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CC8	#FFFFFF	#000000	##FFFFFF
##3F5CC8	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#066BCC

Deuteranopia (green-blind)

#005FC6

Tritanopia (blue-blind)

#007689

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f5cc8;
/* rgb */ color: rgb(63, 92, 200);
/* oklch */ color: oklch(51.4% 0.171 268.4);

Tailwind

colors: {
  custom: {
    50: '#8489d9',
    500: '#3f5cc8',
    950: '#000000',
  },
}

SCSS

$custom: #3f5cc8;
$custom-light: #8489d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5cc8",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 200
  },
  "hsl": {
    "h": 227.299,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.51443,
    "c": 0.17117,
    "h": 268.4
  },
  "luminance": 0.12881
}

Semantic roles & 50–950 ramp

primary

#3F5CC8

secondary

#D0C393

accent

#BF49DF

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5CC8

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

Preview Lab → · Contrast checker → · Palette generator →