#3997BC#3997BC

#3997BC is a light, moderate cyan. Relative luminance 0.266; OKLCH L 63.7% C 0.103 H 228.0°. Best body text is #000000 at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#3997BC
RGB	rgb(57, 151, 188)
HSL	hsl(197, 53%, 48%)
HSV	hsv(197, 70%, 74%)
CMYK	cmyk(69.7%, 19.7%, 0%, 26.3%)
CIE-LAB	lab(58.63, -15.50, -27.21)
CIE-LCH	lch(58.63, 31.31, 240.34°)
OKLab	oklab(63.69% -0.0687 -0.0762)
OKLCH	oklch(63.69% 0.103 228)
XYZ	xyz(21.8274, 26.6315, 51.5572)
Luminance	0.2663 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3997BC #BC5E39

analogous

#39BC9F #3997BC #3955BC

triadic

#3997BC #BC3997 #97BC39

tetradic

#3997BC #9F39BC #BC5E39 #55BC39

square

#3997BC #9F39BC #BC5E39 #55BC39

split-complementary

#3997BC #BC3955 #BC9F39

monochromatic

#1D4C5E #2B718D #3997BC #63B1D0 #92C8DE

Accessibility & contrast

On white

3.32

#3997BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.33

#3997BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3997BC

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3997BC	#FFFFFF	#000000	##000000
##3997BC	1.00	3.32	6.33	6.33
#FFFFFF	3.32	1.00	21.00	21.00
#000000	6.33	21.00	1.00	1.00
##000000	6.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8494BE

Deuteranopia (green-blind)

#7287BC

Tritanopia (blue-blind)

#00A2A3

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #3997bc;
/* rgb */ color: rgb(57, 151, 188);
/* oklch */ color: oklch(63.7% 0.103 228.0);

Tailwind

colors: {
  custom: {
    50: '#7fb5d0',
    500: '#3997bc',
    950: '#000000',
  },
}

SCSS

$custom: #3997bc;
$custom-light: #7fb5d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3997bc",
  "rgb": {
    "r": 57,
    "g": 151,
    "b": 188
  },
  "hsl": {
    "h": 196.947,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.63686,
    "c": 0.10262,
    "h": 228
  },
  "luminance": 0.26634
}

Semantic roles & 50–950 ramp

primary

#3997BC

secondary

#C99A88

accent

#744BDD

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #3997BC

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

Preview Lab → · Contrast checker → · Palette generator →