#3961CA#3961CA

#3961CA is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.3% C 0.169 H 265.2°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#3961CA
RGB	rgb(57, 97, 202)
HSL	hsl(223, 58%, 51%)
HSV	hsv(223, 72%, 79%)
CMYK	cmyk(71.8%, 52%, 0%, 20.8%)
CIE-LAB	lab(43.77, 21.95, -58.72)
CIE-LCH	lch(43.77, 62.69, 290.49°)
OKLab	oklab(52.31% -0.014 -0.1689)
OKLCH	oklch(52.31% 0.169 265.2)
XYZ	xyz(16.6190, 13.6818, 57.6307)
Luminance	0.1368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3961CA #CAA239

analogous

#39AACA #3961CA #5939CA

triadic

#3961CA #CA3961 #61CA39

tetradic

#3961CA #CA39AA #CAA239 #39CA59

square

#3961CA #CA39AA #CAA239 #39CA59

split-complementary

#3961CA #CA5939 #AACA39

monochromatic

#1D336C #2A499C #3961CA #6988D7 #9AAEE4

Accessibility & contrast

On white

5.62

#3961CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#3961CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3961CA

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3961CA	#FFFFFF	#000000	##FFFFFF
##3961CA	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B6ECE

Deuteranopia (green-blind)

#0061C8

Tritanopia (blue-blind)

#007A8C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3961ca;
/* rgb */ color: rgb(57, 97, 202);
/* oklch */ color: oklch(52.3% 0.169 265.2);

Tailwind

colors: {
  custom: {
    50: '#828ddb',
    500: '#3961ca',
    950: '#000000',
  },
}

SCSS

$custom: #3961ca;
$custom-light: #828ddb;
$custom-dark: #000000;

JSON

{
  "hex": "#3961ca",
  "rgb": {
    "r": 57,
    "g": 97,
    "b": 202
  },
  "hsl": {
    "h": 223.448,
    "s": 57.769,
    "l": 50.784
  },
  "oklch": {
    "l": 0.52313,
    "c": 0.16948,
    "h": 265.2
  },
  "luminance": 0.13684
}

Semantic roles & 50–950 ramp

primary

#3961CA

secondary

#D0BE8F

accent

#B647E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3961CA

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

Preview Lab → · Contrast checker → · Palette generator →