#3963CA#3963CA

#3963CA is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.7% C 0.167 H 264.6°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#3963CA
RGB	rgb(57, 99, 202)
HSL	hsl(223, 58%, 51%)
HSV	hsv(223, 72%, 79%)
CMYK	cmyk(71.8%, 51%, 0%, 20.8%)
CIE-LAB	lab(44.31, 20.67, -57.85)
CIE-LCH	lch(44.31, 61.43, 289.66°)
OKLab	oklab(52.72% -0.0157 -0.1663)
OKLCH	oklch(52.72% 0.167 264.6)
XYZ	xyz(16.8061, 14.0560, 57.6930)
Luminance	0.1406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963CA #CAA039

analogous

#39ABCA #3963CA #5739CA

triadic

#3963CA #CA3963 #63CA39

tetradic

#3963CA #CA39AB #CAA039 #39CA57

square

#3963CA #CA39AB #CAA039 #39CA57

split-complementary

#3963CA #CA5739 #ABCA39

monochromatic

#1D346C #2A4B9C #3963CA #6989D7 #9AAFE4

Accessibility & contrast

On white

5.51

#3963CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#3963CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963CA

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963CA	#FFFFFF	#000000	##FFFFFF
##3963CA	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2370CE

Deuteranopia (green-blind)

#0062C8

Tritanopia (blue-blind)

#007C8D

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3963ca;
/* rgb */ color: rgb(57, 99, 202);
/* oklch */ color: oklch(52.7% 0.167 264.6);

Tailwind

colors: {
  custom: {
    50: '#828edb',
    500: '#3963ca',
    950: '#000000',
  },
}

SCSS

$custom: #3963ca;
$custom-light: #828edb;
$custom-dark: #000000;

JSON

{
  "hex": "#3963ca",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 202
  },
  "hsl": {
    "h": 222.621,
    "s": 57.769,
    "l": 50.784
  },
  "oklch": {
    "l": 0.52723,
    "c": 0.16704,
    "h": 264.6
  },
  "luminance": 0.14058
}

Semantic roles & 50–950 ramp

primary

#3963CA

secondary

#D0BD8F

accent

#B447E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3963CA

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

Preview Lab → · Contrast checker → · Palette generator →