#3997BB#3997BB

#3997BB is a light, moderate cyan. Relative luminance 0.266; OKLCH L 63.6% C 0.102 H 227.3°. Best body text is #000000 at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#3997BB
RGB	rgb(57, 151, 187)
HSL	hsl(197, 53%, 48%)
HSV	hsv(197, 70%, 73%)
CMYK	cmyk(69.5%, 19.3%, 0%, 26.7%)
CIE-LAB	lab(58.59, -15.83, -26.71)
CIE-LCH	lch(58.59, 31.05, 239.35°)
OKLab	oklab(63.64% -0.0691 -0.0748)
OKLCH	oklch(63.64% 0.102 227.3)
XYZ	xyz(21.7200, 26.5885, 50.9915)
Luminance	0.2659 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3997BB #BB5D39

analogous

#39BB9E #3997BB #3956BB

triadic

#3997BB #BB3997 #97BB39

tetradic

#3997BB #9E39BB #BB5D39 #56BB39

square

#3997BB #9E39BB #BB5D39 #56BB39

split-complementary

#3997BB #BB3956 #BB9E39

monochromatic

#1C4B5D #2B718C #3997BB #62B1CF #91C8DD

Accessibility & contrast

On white

3.32

#3997BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.32

#3997BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3997BB

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3997BB	#FFFFFF	#000000	##000000
##3997BB	1.00	3.32	6.32	6.32
#FFFFFF	3.32	1.00	21.00	21.00
#000000	6.32	21.00	1.00	1.00
##000000	6.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8494BD

Deuteranopia (green-blind)

#7287BB

Tritanopia (blue-blind)

#00A1A3

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #3997bb;
/* rgb */ color: rgb(57, 151, 187);
/* oklch */ color: oklch(63.6% 0.102 227.3);

Tailwind

colors: {
  custom: {
    50: '#7fb5cf',
    500: '#3997bb',
    950: '#000000',
  },
}

SCSS

$custom: #3997bb;
$custom-light: #7fb5cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3997bb",
  "rgb": {
    "r": 57,
    "g": 151,
    "b": 187
  },
  "hsl": {
    "h": 196.615,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.63641,
    "c": 0.1018,
    "h": 227.3
  },
  "luminance": 0.26591
}

Semantic roles & 50–950 ramp

primary

#3997BB

secondary

#C89987

accent

#734BDD

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #3997BB

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

Preview Lab → · Contrast checker → · Palette generator →