#51BBD7#51BBD7

#51BBD7 is a light, moderate cyan. Relative luminance 0.422; OKLCH L 74.1% C 0.104 H 218.1°. Best body text is #000000 at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#51BBD7
RGB	rgb(81, 187, 215)
HSL	hsl(193, 63%, 58%)
HSV	hsv(193, 62%, 84%)
CMYK	cmyk(62.3%, 13%, 0%, 15.7%)
CIE-LAB	lab(71.00, -22.09, -23.15)
CIE-LCH	lch(71.00, 32.00, 226.33°)
OKLab	oklab(74.12% -0.0821 -0.0644)
OKLCH	oklch(74.12% 0.104 218.1)
XYZ	xyz(33.4244, 42.1928, 70.6593)
Luminance	0.4220 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BBD7 #D76D51

analogous

#51D7B0 #51BBD7 #5178D7

triadic

#51BBD7 #D751BB #BBD751

tetradic

#51BBD7 #B051D7 #D76D51 #78D751

square

#51BBD7 #B051D7 #D76D51 #78D751

split-complementary

#51BBD7 #D75178 #D7B051

monochromatic

#20768D #2CA0BF #51BBD7 #83CEE2 #B5E2EE

Accessibility & contrast

On white

2.22

#51BBD7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.44

#51BBD7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BBD7

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BBD7	#FFFFFF	#000000	##000000
##51BBD7	1.00	2.22	9.44	9.44
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.44	21.00	1.00	1.00
##000000	9.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B6D9

Deuteranopia (green-blind)

#96A8D7

Tritanopia (blue-blind)

#00C5C4

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #51bbd7;
/* rgb */ color: rgb(81, 187, 215);
/* oklch */ color: oklch(74.1% 0.104 218.1);

Tailwind

colors: {
  custom: {
    50: '#8fcfe3',
    500: '#51bbd7',
    950: '#000000',
  },
}

SCSS

$custom: #51bbd7;
$custom-light: #8fcfe3;
$custom-dark: #000000;

JSON

{
  "hex": "#51bbd7",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 215
  },
  "hsl": {
    "h": 192.537,
    "s": 62.617,
    "l": 58.039
  },
  "oklch": {
    "l": 0.74123,
    "c": 0.10435,
    "h": 218.1
  },
  "luminance": 0.42196
}

Semantic roles & 50–950 ramp

primary

#51BBD7

secondary

#DDB2A7

accent

#6442E6

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0E1415

muted

#7E8283

Preview Lab

Preview with #51BBD7

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

Preview Lab → · Contrast checker → · Palette generator →