#3961C7#3961C7

#3961C7 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.1% C 0.165 H 265.0°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#3961C7
RGB	rgb(57, 97, 199)
HSL	hsl(223, 56%, 50%)
HSV	hsv(223, 71%, 78%)
CMYK	cmyk(71.4%, 51.3%, 0%, 22%)
CIE-LAB	lab(43.57, 20.85, -57.33)
CIE-LCH	lch(43.57, 61.00, 289.99°)
OKLab	oklab(52.09% -0.0143 -0.1648)
OKLCH	oklch(52.09% 0.165 265)
XYZ	xyz(16.2672, 13.5411, 55.7781)
Luminance	0.1354 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3961C7 #C79F39

analogous

#39A8C7 #3961C7 #5839C7

triadic

#3961C7 #C73961 #61C739

tetradic

#3961C7 #C739A8 #C79F39 #39C758

square

#3961C7 #C739A8 #C79F39 #39C758

split-complementary

#3961C7 #C75839 #A8C739

monochromatic

#1D3268 #2B4A98 #3961C7 #6987D4 #98ADE2

Accessibility & contrast

On white

5.66

#3961C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#3961C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3961C7

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3961C7	#FFFFFF	#000000	##FFFFFF
##3961C7	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#216ECB

Deuteranopia (green-blind)

#0061C5

Tritanopia (blue-blind)

#00798B

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3961c7;
/* rgb */ color: rgb(57, 97, 199);
/* oklch */ color: oklch(52.1% 0.165 265.0);

Tailwind

colors: {
  custom: {
    50: '#818dd9',
    500: '#3961c7',
    950: '#000000',
  },
}

SCSS

$custom: #3961c7;
$custom-light: #818dd9;
$custom-dark: #000000;

JSON

{
  "hex": "#3961c7",
  "rgb": {
    "r": 57,
    "g": 97,
    "b": 199
  },
  "hsl": {
    "h": 223.099,
    "s": 55.906,
    "l": 50.196
  },
  "oklch": {
    "l": 0.52091,
    "c": 0.1654,
    "h": 265
  },
  "luminance": 0.13543
}

Semantic roles & 50–950 ramp

primary

#3961C7

secondary

#CEBC8E

accent

#B549DF

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3961C7

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

Preview Lab → · Contrast checker → · Palette generator →