#3975BB#3975BB

#3975BB is a mid, vivid cyan. Relative luminance 0.172; OKLCH L 55.6% C 0.126 H 253.9°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3975BB
RGB	rgb(57, 117, 187)
HSL	hsl(212, 53%, 48%)
HSV	hsv(212, 70%, 73%)
CMYK	cmyk(69.5%, 37.4%, 0%, 26.7%)
CIE-LAB	lab(48.48, 3.85, -42.52)
CIE-LCH	lch(48.48, 42.70, 275.17°)
OKLab	oklab(55.65% -0.0348 -0.121)
OKLCH	oklch(55.65% 0.126 253.9)
XYZ	xyz(17.0150, 17.1785, 49.4231)
Luminance	0.1718 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3975BB #BB7F39

analogous

#39B6BB #3975BB #3E39BB

triadic

#3975BB #BB3975 #75BB39

tetradic

#3975BB #BB39B6 #BB7F39 #39BB3E

square

#3975BB #BB39B6 #BB7F39 #39BB3E

split-complementary

#3975BB #BB3E39 #B6BB39

monochromatic

#1C3A5D #2B588C #3975BB #6294CF #91B4DD

Accessibility & contrast

On white

4.73

#3975BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3975BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3975BB

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3975BB	#FFFFFF	#000000	##FFFFFF
##3975BB	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#557ABE

Deuteranopia (green-blind)

#426EBA

Tritanopia (blue-blind)

#00858F

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3975bb;
/* rgb */ color: rgb(57, 117, 187);
/* oklch */ color: oklch(55.6% 0.126 253.9);

Tailwind

colors: {
  custom: {
    50: '#7e9cd0',
    500: '#3975bb',
    950: '#000000',
  },
}

SCSS

$custom: #3975bb;
$custom-light: #7e9cd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3975bb",
  "rgb": {
    "r": 57,
    "g": 117,
    "b": 187
  },
  "hsl": {
    "h": 212.308,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.55647,
    "c": 0.12588,
    "h": 253.9
  },
  "luminance": 0.1718
}

Semantic roles & 50–950 ramp

primary

#3975BB

secondary

#C8AA87

accent

#994BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3975BB

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

Preview Lab → · Contrast checker → · Palette generator →