#3B63BC#3B63BC

#3B63BC is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.8% C 0.147 H 263.8°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#3B63BC
RGB	rgb(59, 99, 188)
HSL	hsl(221, 52%, 48%)
HSV	hsv(221, 69%, 74%)
CMYK	cmyk(68.6%, 47.3%, 0%, 26.3%)
CIE-LAB	lab(43.48, 15.84, -51.09)
CIE-LCH	lch(43.48, 53.48, 287.22°)
OKLab	oklab(51.82% -0.0158 -0.1463)
OKLCH	oklch(51.82% 0.147 263.8)
XYZ	xyz(15.3394, 13.4828, 49.3612)
Luminance	0.1348 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B63BC #BC943B

analogous

#3BA3BC #3B63BC #533BBC

triadic

#3B63BC #BC3B63 #63BC3B

tetradic

#3B63BC #BC3BA3 #BC943B #3BBC53

square

#3B63BC #BC3BA3 #BC943B #3BBC53

split-complementary

#3B63BC #BC533B #A3BC3B

monochromatic

#1E325F #2C4A8D #3B63BC #6586CF #94ABDD

Accessibility & contrast

On white

5.68

#3B63BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#3B63BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B63BC

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B63BC	#FFFFFF	#000000	##FFFFFF
##3B63BC	1.00	5.68	3.70	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356DBF

Deuteranopia (green-blind)

#1761BA

Tritanopia (blue-blind)

#007886

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3b63bc;
/* rgb */ color: rgb(59, 99, 188);
/* oklch */ color: oklch(51.8% 0.147 263.8);

Tailwind

colors: {
  custom: {
    50: '#808ed1',
    500: '#3b63bc',
    950: '#000000',
  },
}

SCSS

$custom: #3b63bc;
$custom-light: #808ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#3b63bc",
  "rgb": {
    "r": 59,
    "g": 99,
    "b": 188
  },
  "hsl": {
    "h": 221.395,
    "s": 52.227,
    "l": 48.431
  },
  "oklch": {
    "l": 0.51819,
    "c": 0.1472,
    "h": 263.8
  },
  "luminance": 0.13484
}

Semantic roles & 50–950 ramp

primary

#3B63BC

secondary

#C9B58A

accent

#AF4CDC

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3B63BC

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

Preview Lab → · Contrast checker → · Palette generator →