#3973BF#3973BF

#3973BF is a mid, vivid cyan. Relative luminance 0.169; OKLCH L 55.4% C 0.133 H 256.1°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#3973BF
RGB	rgb(57, 115, 191)
HSL	hsl(214, 54%, 49%)
HSV	hsv(214, 70%, 75%)
CMYK	cmyk(70.2%, 39.8%, 0%, 25.1%)
CIE-LAB	lab(48.12, 6.53, -45.41)
CIE-LCH	lch(48.12, 45.87, 278.18°)
OKLab	oklab(55.44% -0.0319 -0.1294)
OKLCH	oklch(55.44% 0.133 256.1)
XYZ	xyz(17.2186, 16.8911, 51.6330)
Luminance	0.1689 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3973BF #BF8539

analogous

#39B6BF #3973BF #4239BF

triadic

#3973BF #BF3973 #73BF39

tetradic

#3973BF #BF39B6 #BF8539 #39BF42

square

#3973BF #BF39B6 #BF8539 #39BF42

split-complementary

#3973BF #BF4239 #B6BF39

monochromatic

#1D3A61 #2B5790 #3973BF #6493D1 #93B4DF

Accessibility & contrast

On white

4.80

#3973BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#3973BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3973BF

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3973BF	#FFFFFF	#000000	##FFFFFF
##3973BF	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5079C2

Deuteranopia (green-blind)

#3B6DBD

Tritanopia (blue-blind)

#008590

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3973bf;
/* rgb */ color: rgb(57, 115, 191);
/* oklch */ color: oklch(55.4% 0.133 256.1);

Tailwind

colors: {
  custom: {
    50: '#7f9ad3',
    500: '#3973bf',
    950: '#000000',
  },
}

SCSS

$custom: #3973bf;
$custom-light: #7f9ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#3973bf",
  "rgb": {
    "r": 57,
    "g": 115,
    "b": 191
  },
  "hsl": {
    "h": 214.03,
    "s": 54.032,
    "l": 48.627
  },
  "oklch": {
    "l": 0.55437,
    "c": 0.13332,
    "h": 256.1
  },
  "luminance": 0.16893
}

Semantic roles & 50–950 ramp

primary

#3973BF

secondary

#CAAE8A

accent

#9E4ADD

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3973BF

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

Preview Lab → · Contrast checker → · Palette generator →