#3997CC#3997CC

#3997CC is a light, moderate cyan. Relative luminance 0.274; OKLCH L 64.4% C 0.118 H 237.5°. Best body text is #000000 at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#3997CC
RGB	rgb(57, 151, 204)
HSL	hsl(202, 59%, 51%)
HSV	hsv(202, 72%, 80%)
CMYK	cmyk(72.1%, 26%, 0%, 20%)
CIE-LAB	lab(59.31, -10.11, -35.17)
CIE-LCH	lch(59.31, 36.60, 253.96°)
OKLab	oklab(64.45% -0.0631 -0.0991)
OKLCH	oklch(64.45% 0.118 237.5)
XYZ	xyz(23.6488, 27.3600, 61.1497)
Luminance	0.2736 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3997CC #CC6E39

analogous

#39CCB8 #3997CC #394DCC

triadic

#3997CC #CC3997 #97CC39

tetradic

#3997CC #B839CC #CC6E39 #4DCC39

square

#3997CC #B839CC #CC6E39 #4DCC39

split-complementary

#3997CC #CC394D #CCB839

monochromatic

#1C516E #29749F #3997CC #6AB1D9 #9ACAE5

Accessibility & contrast

On white

3.24

#3997CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.47

#3997CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3997CC

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3997CC	#FFFFFF	#000000	##000000
##3997CC	1.00	3.24	6.47	6.47
#FFFFFF	3.24	1.00	21.00	21.00
#000000	6.47	21.00	1.00	1.00
##000000	6.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E97CE

Deuteranopia (green-blind)

#6A89CB

Tritanopia (blue-blind)

#00A5A9

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #3997cc;
/* rgb */ color: rgb(57, 151, 204);
/* oklch */ color: oklch(64.4% 0.118 237.5);

Tailwind

colors: {
  custom: {
    50: '#82b5db',
    500: '#3997cc',
    950: '#000000',
  },
}

SCSS

$custom: #3997cc;
$custom-light: #82b5db;
$custom-dark: #000000;

JSON

{
  "hex": "#3997cc",
  "rgb": {
    "r": 57,
    "g": 151,
    "b": 204
  },
  "hsl": {
    "h": 201.633,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.64446,
    "c": 0.11752,
    "h": 237.5
  },
  "luminance": 0.27363
}

Semantic roles & 50–950 ramp

primary

#3997CC

secondary

#D1A790

accent

#7E46E2

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #3997CC

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

Preview Lab → · Contrast checker → · Palette generator →