#4099BC#4099BC

#4099BC is a light, moderate cyan. Relative luminance 0.275; OKLCH L 64.4% C 0.099 H 227.4°. Best body text is #000000 at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#4099BC
RGB	rgb(64, 153, 188)
HSL	hsl(197, 49%, 49%)
HSV	hsv(197, 66%, 74%)
CMYK	cmyk(66%, 18.6%, 0%, 26.3%)
CIE-LAB	lab(59.44, -15.49, -25.95)
CIE-LCH	lch(59.44, 30.22, 239.18°)
OKLab	oklab(64.39% -0.0668 -0.0726)
OKLCH	oklch(64.39% 0.099 227.4)
XYZ	xyz(22.5791, 27.5009, 51.6855)
Luminance	0.2750 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4099BC #BC6340

analogous

#40BCA1 #4099BC #405BBC

triadic

#4099BC #BC4099 #99BC40

tetradic

#4099BC #A140BC #BC6340 #5BBC40

square

#4099BC #A140BC #BC6340 #5BBC40

split-complementary

#4099BC #BC405B #BCA140

monochromatic

#214F61 #30748E #4099BC #6CB2CD #9ACADD

Accessibility & contrast

On white

3.23

#4099BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.50

#4099BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4099BC

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4099BC	#FFFFFF	#000000	##000000
##4099BC	1.00	3.23	6.50	6.50
#FFFFFF	3.23	1.00	21.00	21.00
#000000	6.50	21.00	1.00	1.00
##000000	6.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8696BE

Deuteranopia (green-blind)

#758ABC

Tritanopia (blue-blind)

#00A3A4

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #4099bc;
/* rgb */ color: rgb(64, 153, 188);
/* oklch */ color: oklch(64.4% 0.099 227.4);

Tailwind

colors: {
  custom: {
    50: '#82b7d0',
    500: '#4099bc',
    950: '#000000',
  },
}

SCSS

$custom: #4099bc;
$custom-light: #82b7d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4099bc",
  "rgb": {
    "r": 64,
    "g": 153,
    "b": 188
  },
  "hsl": {
    "h": 196.935,
    "s": 49.206,
    "l": 49.412
  },
  "oklch": {
    "l": 0.64385,
    "c": 0.09864,
    "h": 227.4
  },
  "luminance": 0.27503
}

Semantic roles & 50–950 ramp

primary

#4099BC

secondary

#C99F8F

accent

#764FD9

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0C1114

muted

#7D8082

Preview Lab

Preview with #4099BC

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

Preview Lab → · Contrast checker → · Palette generator →