#3997BF#3997BF

#3997BF is a light, moderate cyan. Relative luminance 0.268; OKLCH L 63.8% C 0.105 H 230.0°. Best body text is #000000 at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#3997BF
RGB	rgb(57, 151, 191)
HSL	hsl(198, 54%, 49%)
HSV	hsv(198, 70%, 75%)
CMYK	cmyk(70.2%, 20.9%, 0%, 25.1%)
CIE-LAB	lab(58.75, -14.50, -28.72)
CIE-LCH	lch(58.75, 32.17, 243.20°)
OKLab	oklab(63.82% -0.0676 -0.0805)
OKLCH	oklch(63.82% 0.105 230)
XYZ	xyz(22.1542, 26.7622, 53.2781)
Luminance	0.2676 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3997BF #BF6139

analogous

#39BFA4 #3997BF #3954BF

triadic

#3997BF #BF3997 #97BF39

tetradic

#3997BF #A439BF #BF6139 #54BF39

square

#3997BF #A439BF #BF6139 #54BF39

split-complementary

#3997BF #BF3954 #BFA439

monochromatic

#1D4C61 #2B7290 #3997BF #64B0D1 #93C8DF

Accessibility & contrast

On white

3.31

#3997BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.35

#3997BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3997BF

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3997BF	#FFFFFF	#000000	##000000
##3997BF	1.00	3.31	6.35	6.35
#FFFFFF	3.31	1.00	21.00	21.00
#000000	6.35	21.00	1.00	1.00
##000000	6.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8395C1

Deuteranopia (green-blind)

#7088BE

Tritanopia (blue-blind)

#00A2A4

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #3997bf;
/* rgb */ color: rgb(57, 151, 191);
/* oklch */ color: oklch(63.8% 0.105 230.0);

Tailwind

colors: {
  custom: {
    50: '#80b5d2',
    500: '#3997bf',
    950: '#000000',
  },
}

SCSS

$custom: #3997bf;
$custom-light: #80b5d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3997bf",
  "rgb": {
    "r": 57,
    "g": 151,
    "b": 191
  },
  "hsl": {
    "h": 197.91,
    "s": 54.032,
    "l": 48.627
  },
  "oklch": {
    "l": 0.63824,
    "c": 0.10516,
    "h": 230
  },
  "luminance": 0.26765
}

Semantic roles & 50–950 ramp

primary

#3997BF

secondary

#CA9D8A

accent

#764ADD

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #3997BF

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

Preview Lab → · Contrast checker → · Palette generator →