#51BCD7#51BCD7

#51BCD7 is a light, moderate cyan. Relative luminance 0.426; OKLCH L 74.4% C 0.104 H 217.2°. Best body text is #000000 at 9.52:1 contrast (WCAG AA passes).

Color values

HEX	#51BCD7
RGB	rgb(81, 188, 215)
HSL	hsl(192, 63%, 58%)
HSV	hsv(192, 62%, 84%)
CMYK	cmyk(62.3%, 12.6%, 0%, 15.7%)
CIE-LAB	lab(71.30, -22.60, -22.70)
CIE-LCH	lch(71.30, 32.04, 225.13°)
OKLab	oklab(74.36% -0.0832 -0.0631)
OKLCH	oklch(74.36% 0.104 217.2)
XYZ	xyz(33.6373, 42.6186, 70.7303)
Luminance	0.4262 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BCD7 #D76C51

analogous

#51D7AF #51BCD7 #5179D7

triadic

#51BCD7 #D751BC #BCD751

tetradic

#51BCD7 #AF51D7 #D76C51 #79D751

square

#51BCD7 #AF51D7 #D76C51 #79D751

split-complementary

#51BCD7 #D75179 #D7AF51

monochromatic

#20778D #2CA1BF #51BCD7 #83CFE2 #B5E2EE

Accessibility & contrast

On white

2.20

#51BCD7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.52

#51BCD7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BCD7

9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BCD7	#FFFFFF	#000000	##000000
##51BCD7	1.00	2.20	9.52	9.52
#FFFFFF	2.20	1.00	21.00	21.00
#000000	9.52	21.00	1.00	1.00
##000000	9.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AAB7D9

Deuteranopia (green-blind)

#97A8D7

Tritanopia (blue-blind)

#00C6C4

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #51bcd7;
/* rgb */ color: rgb(81, 188, 215);
/* oklch */ color: oklch(74.4% 0.104 217.2);

Tailwind

colors: {
  custom: {
    50: '#8fd0e3',
    500: '#51bcd7',
    950: '#000000',
  },
}

SCSS

$custom: #51bcd7;
$custom-light: #8fd0e3;
$custom-dark: #000000;

JSON

{
  "hex": "#51bcd7",
  "rgb": {
    "r": 81,
    "g": 188,
    "b": 215
  },
  "hsl": {
    "h": 192.09,
    "s": 62.617,
    "l": 58.039
  },
  "oklch": {
    "l": 0.74357,
    "c": 0.1044,
    "h": 217.2
  },
  "luminance": 0.42622
}

Semantic roles & 50–950 ramp

primary

#51BCD7

secondary

#DDB2A7

accent

#6342E6

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0E1415

muted

#7E8283

Preview Lab

Preview with #51BCD7

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

Preview Lab → · Contrast checker → · Palette generator →