#3B63BA#3B63BA

#3B63BA is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.7% C 0.144 H 263.6°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#3B63BA
RGB	rgb(59, 99, 186)
HSL	hsl(221, 52%, 48%)
HSV	hsv(221, 68%, 73%)
CMYK	cmyk(68.3%, 46.8%, 0%, 27.1%)
CIE-LAB	lab(43.36, 15.11, -50.12)
CIE-LCH	lch(43.36, 52.35, 286.77°)
OKLab	oklab(51.68% -0.0161 -0.1435)
OKLCH	oklch(51.68% 0.144 263.6)
XYZ	xyz(15.1253, 13.3972, 48.2336)
Luminance	0.1340 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B63BA #BA923B

analogous

#3BA3BA #3B63BA #523BBA

triadic

#3B63BA #BA3B63 #63BA3B

tetradic

#3B63BA #BA3BA3 #BA923B #3BBA52

square

#3B63BA #BA3BA3 #BA923B #3BBA52

split-complementary

#3B63BA #BA523B #A3BA3B

monochromatic

#1E325D #2C4A8C #3B63BA #6486CE #93AADD

Accessibility & contrast

On white

5.71

#3B63BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#3B63BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B63BA

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B63BA	#FFFFFF	#000000	##FFFFFF
##3B63BA	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366DBD

Deuteranopia (green-blind)

#1C61B8

Tritanopia (blue-blind)

#007785

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3b63ba;
/* rgb */ color: rgb(59, 99, 186);
/* oklch */ color: oklch(51.7% 0.144 263.6);

Tailwind

colors: {
  custom: {
    50: '#7f8ecf',
    500: '#3b63ba',
    950: '#000000',
  },
}

SCSS

$custom: #3b63ba;
$custom-light: #7f8ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#3b63ba",
  "rgb": {
    "r": 59,
    "g": 99,
    "b": 186
  },
  "hsl": {
    "h": 221.102,
    "s": 51.837,
    "l": 48.039
  },
  "oklch": {
    "l": 0.51682,
    "c": 0.14442,
    "h": 263.6
  },
  "luminance": 0.13399
}

Semantic roles & 50–950 ramp

primary

#3B63BA

secondary

#C8B489

accent

#AE4DDB

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3B63BA

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

Preview Lab → · Contrast checker → · Palette generator →