#3999CD#3999CD

#3999CD is a light, moderate cyan. Relative luminance 0.281; OKLCH L 65.0% C 0.117 H 236.5°. Best body text is #000000 at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#3999CD
RGB	rgb(57, 153, 205)
HSL	hsl(201, 60%, 51%)
HSV	hsv(201, 72%, 80%)
CMYK	cmyk(72.2%, 25.4%, 0%, 19.6%)
CIE-LAB	lab(59.94, -10.89, -34.74)
CIE-LCH	lch(59.94, 36.41, 252.60°)
OKLab	oklab(64.96% -0.0647 -0.0979)
OKLCH	oklch(64.96% 0.117 236.5)
XYZ	xyz(24.0937, 28.0574, 61.8916)
Luminance	0.2806 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3999CD #CD6D39

analogous

#39CDB7 #3999CD #394FCD

triadic

#3999CD #CD3999 #99CD39

tetradic

#3999CD #B739CD #CD6D39 #4FCD39

square

#3999CD #B739CD #CD6D39 #4FCD39

split-complementary

#3999CD #CD394F #CDB739

monochromatic

#1C526F #2876A0 #3999CD #6AB2D9 #9BCBE6

Accessibility & contrast

On white

3.18

#3999CD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.61

#3999CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3999CD

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3999CD	#FFFFFF	#000000	##000000
##3999CD	1.00	3.18	6.61	6.61
#FFFFFF	3.18	1.00	21.00	21.00
#000000	6.61	21.00	1.00	1.00
##000000	6.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8098CF

Deuteranopia (green-blind)

#6C8ACC

Tritanopia (blue-blind)

#00A6AB

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #3999cd;
/* rgb */ color: rgb(57, 153, 205);
/* oklch */ color: oklch(65.0% 0.117 236.5);

Tailwind

colors: {
  custom: {
    50: '#82b7dc',
    500: '#3999cd',
    950: '#000000',
  },
}

SCSS

$custom: #3999cd;
$custom-light: #82b7dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3999cd",
  "rgb": {
    "r": 57,
    "g": 153,
    "b": 205
  },
  "hsl": {
    "h": 201.081,
    "s": 59.677,
    "l": 51.373
  },
  "oklch": {
    "l": 0.64964,
    "c": 0.11734,
    "h": 236.5
  },
  "luminance": 0.2806
}

Semantic roles & 50–950 ramp

primary

#3999CD

secondary

#D2A790

accent

#7C45E3

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #3999CD

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

Preview Lab → · Contrast checker → · Palette generator →