#51B3CD#51B3CD

#51B3CD is a light, moderate cyan. Relative luminance 0.384; OKLCH L 71.8% C 0.098 H 218.0°. Best body text is #000000 at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#51B3CD
RGB	rgb(81, 179, 205)
HSL	hsl(193, 55%, 56%)
HSV	hsv(193, 60%, 80%)
CMYK	cmyk(60.5%, 12.7%, 0%, 19.6%)
CIE-LAB	lab(68.31, -20.99, -21.78)
CIE-LCH	lch(68.31, 30.24, 226.06°)
OKLab	oklab(71.85% -0.0776 -0.0605)
OKLCH	oklch(71.85% 0.098 218)
XYZ	xyz(30.5285, 38.3942, 63.5477)
Luminance	0.3840 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B3CD #CD6B51

analogous

#51CDA9 #51B3CD #5175CD

triadic

#51B3CD #CD51B3 #B3CD51

tetradic

#51B3CD #A951CD #CD6B51 #75CD51

square

#51B3CD #A951CD #CD6B51 #75CD51

split-complementary

#51B3CD #CD5175 #CDA951

monochromatic

#256C7F #3295AF #51B3CD #81C8DB #B0DDE8

Accessibility & contrast

On white

2.42

#51B3CD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.68

#51B3CD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B3CD

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B3CD	#FFFFFF	#000000	##000000
##51B3CD	1.00	2.42	8.68	8.68
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.68	21.00	1.00	1.00
##000000	8.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2AECE

Deuteranopia (green-blind)

#90A1CD

Tritanopia (blue-blind)

#00BCBB

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #51b3cd;
/* rgb */ color: rgb(81, 179, 205);
/* oklch */ color: oklch(71.8% 0.098 218.0);

Tailwind

colors: {
  custom: {
    50: '#8ecadc',
    500: '#51b3cd',
    950: '#000000',
  },
}

SCSS

$custom: #51b3cd;
$custom-light: #8ecadc;
$custom-dark: #000000;

JSON

{
  "hex": "#51b3cd",
  "rgb": {
    "r": 81,
    "g": 179,
    "b": 205
  },
  "hsl": {
    "h": 192.581,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.71847,
    "c": 0.09837,
    "h": 218
  },
  "luminance": 0.38397
}

Semantic roles & 50–950 ramp

primary

#51B3CD

secondary

#D7AEA3

accent

#6849DF

background

#F9FCFD

surface

#F2F8FB

border

#CCD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #51B3CD

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

Preview Lab → · Contrast checker → · Palette generator →