#3999BD#3999BD

#3999BD is a light, moderate cyan. Relative luminance 0.273; OKLCH L 64.2% C 0.103 H 226.8°. Best body text is #000000 at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#3999BD
RGB	rgb(57, 153, 189)
HSL	hsl(196, 54%, 48%)
HSV	hsv(196, 70%, 74%)
CMYK	cmyk(69.8%, 19%, 0%, 25.9%)
CIE-LAB	lab(59.27, -16.25, -26.79)
CIE-LCH	lch(59.27, 31.33, 238.75°)
OKLab	oklab(64.21% -0.0704 -0.075)
OKLCH	oklch(64.21% 0.103 226.8)
XYZ	xyz(22.2602, 27.3239, 52.2351)
Luminance	0.2733 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3999BD #BD5D39

analogous

#39BD9F #3999BD #3957BD

triadic

#3999BD #BD3999 #99BD39

tetradic

#3999BD #9F39BD #BD5D39 #57BD39

square

#3999BD #9F39BD #BD5D39 #57BD39

split-complementary

#3999BD #BD3957 #BD9F39

monochromatic

#1D4D5F #2B738E #3999BD #63B2D0 #92C9DE

Accessibility & contrast

On white

3.25

#3999BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.47

#3999BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3999BD

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3999BD	#FFFFFF	#000000	##000000
##3999BD	1.00	3.25	6.47	6.47
#FFFFFF	3.25	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)

#8696BF

Deuteranopia (green-blind)

#7489BD

Tritanopia (blue-blind)

#00A3A5

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #3999bd;
/* rgb */ color: rgb(57, 153, 189);
/* oklch */ color: oklch(64.2% 0.103 226.8);

Tailwind

colors: {
  custom: {
    50: '#80b7d1',
    500: '#3999bd',
    950: '#000000',
  },
}

SCSS

$custom: #3999bd;
$custom-light: #80b7d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3999bd",
  "rgb": {
    "r": 57,
    "g": 153,
    "b": 189
  },
  "hsl": {
    "h": 196.364,
    "s": 53.659,
    "l": 48.235
  },
  "oklch": {
    "l": 0.64212,
    "c": 0.10284,
    "h": 226.8
  },
  "luminance": 0.27326
}

Semantic roles & 50–950 ramp

primary

#3999BD

secondary

#C99A89

accent

#734BDD

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #3999BD

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

Preview Lab → · Contrast checker → · Palette generator →