#3963AD#3963AD

#3963AD is a mid, vivid blue. Relative luminance 0.128; OKLCH L 50.7% C 0.127 H 260.9°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#3963AD
RGB	rgb(57, 99, 173)
HSL	hsl(218, 50%, 45%)
HSV	hsv(218, 67%, 68%)
CMYK	cmyk(67.1%, 42.8%, 0%, 32.2%)
CIE-LAB	lab(42.47, 10.05, -43.93)
CIE-LCH	lch(42.47, 45.06, 282.88°)
OKLab	oklab(50.72% -0.0201 -0.1254)
OKLCH	oklch(50.72% 0.127 260.9)
XYZ	xyz(13.6893, 12.8093, 41.2781)
Luminance	0.1281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963AD #AD8339

analogous

#399DAD #3963AD #4939AD

triadic

#3963AD #AD3963 #63AD39

tetradic

#3963AD #AD399D #AD8339 #39AD49

square

#3963AD #AD399D #AD8339 #39AD49

split-complementary

#3963AD #AD4939 #9DAD39

monochromatic

#1B2E51 #2A497F #3963AD #5A82C9 #88A5D8

Accessibility & contrast

On white

5.90

#3963AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#3963AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963AD

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963AD	#FFFFFF	#000000	##FFFFFF
##3963AD	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#406AB0

Deuteranopia (green-blind)

#2E5FAB

Tritanopia (blue-blind)

#00747F

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3963ad;
/* rgb */ color: rgb(57, 99, 173);
/* oklch */ color: oklch(50.7% 0.127 260.9);

Tailwind

colors: {
  custom: {
    50: '#7c8ec6',
    500: '#3963ad',
    950: '#000000',
  },
}

SCSS

$custom: #3963ad;
$custom-light: #7c8ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#3963ad",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 173
  },
  "hsl": {
    "h": 218.276,
    "s": 50.435,
    "l": 45.098
  },
  "oklch": {
    "l": 0.50723,
    "c": 0.12697,
    "h": 260.9
  },
  "luminance": 0.12811
}

Semantic roles & 50–950 ramp

primary

#3963AD

secondary

#C2AA80

accent

#A74EDA

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3963AD

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

Preview Lab → · Contrast checker → · Palette generator →