#51B3CC#51B3CC

#51B3CC is a light, moderate cyan. Relative luminance 0.383; OKLCH L 71.8% C 0.098 H 217.2°. Best body text is #000000 at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#51B3CC
RGB	rgb(81, 179, 204)
HSL	hsl(192, 55%, 56%)
HSV	hsv(192, 60%, 80%)
CMYK	cmyk(60.3%, 12.3%, 0%, 20%)
CIE-LAB	lab(68.27, -21.28, -21.28)
CIE-LCH	lch(68.27, 30.10, 224.99°)
OKLab	oklab(71.81% -0.0779 -0.0591)
OKLCH	oklch(71.81% 0.098 217.2)
XYZ	xyz(30.4081, 38.3461, 62.9141)
Luminance	0.3835 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B3CC #CC6A51

analogous

#51CCA7 #51B3CC #5175CC

triadic

#51B3CC #CC51B3 #B3CC51

tetradic

#51B3CC #A751CC #CC6A51 #75CC51

square

#51B3CC #A751CC #CC6A51 #75CC51

split-complementary

#51B3CC #CC5175 #CCA751

monochromatic

#256C7E #3394AD #51B3CC #80C8DA #B0DCE8

Accessibility & contrast

On white

2.42

#51B3CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.67

#51B3CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B3CC

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B3CC	#FFFFFF	#000000	##000000
##51B3CC	1.00	2.42	8.67	8.67
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.67	21.00	1.00	1.00
##000000	8.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2AECD

Deuteranopia (green-blind)

#90A1CC

Tritanopia (blue-blind)

#00BCBB

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51b3cc;
/* rgb */ color: rgb(81, 179, 204);
/* oklch */ color: oklch(71.8% 0.098 217.2);

Tailwind

colors: {
  custom: {
    50: '#8dcadb',
    500: '#51b3cc',
    950: '#000000',
  },
}

SCSS

$custom: #51b3cc;
$custom-light: #8dcadb;
$custom-dark: #000000;

JSON

{
  "hex": "#51b3cc",
  "rgb": {
    "r": 81,
    "g": 179,
    "b": 204
  },
  "hsl": {
    "h": 192.195,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.71807,
    "c": 0.09783,
    "h": 217.2
  },
  "luminance": 0.38349
}

Semantic roles & 50–950 ramp

primary

#51B3CC

secondary

#D6ADA3

accent

#684ADE

background

#F9FCFD

surface

#F2F8FB

border

#CCD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #51B3CC

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

Preview Lab → · Contrast checker → · Palette generator →