#4DB9EF#4DB9EF

#4DB9EF is a light, vivid cyan. Relative luminance 0.425; OKLCH L 74.6% C 0.125 H 233.8°. Best body text is #000000 at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#4DB9EF
RGB	rgb(77, 185, 239)
HSL	hsl(200, 84%, 62%)
HSV	hsv(200, 68%, 94%)
CMYK	cmyk(67.8%, 22.6%, 0%, 6.3%)
CIE-LAB	lab(71.22, -14.23, -35.89)
CIE-LCH	lch(71.22, 38.61, 248.38°)
OKLab	oklab(74.56% -0.0737 -0.1008)
OKLCH	oklch(74.56% 0.125 233.8)
XYZ	xyz(35.9834, 42.5038, 87.9523)
Luminance	0.4251 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4DB9EF #EF834D

analogous

#4DEFD4 #4DB9EF #4D68EF

triadic

#4DB9EF #EF4DB9 #B9EF4D

tetradic

#4DB9EF #D44DEF #EF834D #68EF4D

square

#4DB9EF #D44DEF #EF834D #68EF4D

split-complementary

#4DB9EF #EF4D68 #EFD44D

monochromatic

#107CB2 #15A3EA #4DB9EF #85CFF4 #BDE5F9

Accessibility & contrast

On white

2.21

#4DB9EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.50

#4DB9EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #4DB9EF

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4DB9EF	#FFFFFF	#000000	##000000
##4DB9EF	1.00	2.21	9.50	9.50
#FFFFFF	2.21	1.00	21.00	21.00
#000000	9.50	21.00	1.00	1.00
##000000	9.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FB7F2

Deuteranopia (green-blind)

#88A7EE

Tritanopia (blue-blind)

#00C7CB

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #4db9ef;
/* rgb */ color: rgb(77, 185, 239);
/* oklch */ color: oklch(74.6% 0.125 233.8);

Tailwind

colors: {
  custom: {
    50: '#90cef4',
    500: '#4db9ef',
    950: '#000000',
  },
}

SCSS

$custom: #4db9ef;
$custom-light: #90cef4;
$custom-dark: #000000;

JSON

{
  "hex": "#4db9ef",
  "rgb": {
    "r": 77,
    "g": 185,
    "b": 239
  },
  "hsl": {
    "h": 200,
    "s": 83.505,
    "l": 61.961
  },
  "oklch": {
    "l": 0.74561,
    "c": 0.12485,
    "h": 233.8
  },
  "luminance": 0.42508
}

Semantic roles & 50–950 ramp

primary

#4DB9EF

secondary

#EAC2AE

accent

#4E06E0

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1317

muted

#7E8285

Preview Lab

Preview with #4DB9EF

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

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