#51B2CA#51B2CA

#51B2CA is a light, moderate cyan. Relative luminance 0.379; OKLCH L 71.5% C 0.097 H 216.5°. Best body text is #000000 at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#51B2CA
RGB	rgb(81, 178, 202)
HSL	hsl(192, 53%, 55%)
HSV	hsv(192, 60%, 79%)
CMYK	cmyk(59.9%, 11.9%, 0%, 20.8%)
CIE-LAB	lab(67.91, -21.37, -20.73)
CIE-LCH	lch(67.91, 29.77, 224.14°)
OKLab	oklab(71.49% -0.0777 -0.0576)
OKLCH	oklch(71.49% 0.097 216.5)
XYZ	xyz(29.9701, 37.8514, 61.5923)
Luminance	0.3785 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B2CA #CA6951

analogous

#51CAA5 #51B2CA #5175CA

triadic

#51B2CA #CA51B2 #B2CA51

tetradic

#51B2CA #A551CA #CA6951 #75CA51

square

#51B2CA #A551CA #CA6951 #75CA51

split-complementary

#51B2CA #CA5175 #CAA551

monochromatic

#256A7B #3493AA #51B2CA #80C7D8 #AFDCE7

Accessibility & contrast

On white

2.45

#51B2CA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.57

#51B2CA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B2CA

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B2CA	#FFFFFF	#000000	##000000
##51B2CA	1.00	2.45	8.57	8.57
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.57	21.00	1.00	1.00
##000000	8.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2ADCB

Deuteranopia (green-blind)

#90A0CA

Tritanopia (blue-blind)

#00BBB9

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #51b2ca;
/* rgb */ color: rgb(81, 178, 202);
/* oklch */ color: oklch(71.5% 0.097 216.5);

Tailwind

colors: {
  custom: {
    50: '#8dc9da',
    500: '#51b2ca',
    950: '#000000',
  },
}

SCSS

$custom: #51b2ca;
$custom-light: #8dc9da;
$custom-dark: #000000;

JSON

{
  "hex": "#51b2ca",
  "rgb": {
    "r": 81,
    "g": 178,
    "b": 202
  },
  "hsl": {
    "h": 191.901,
    "s": 53.304,
    "l": 55.49
  },
  "oklch": {
    "l": 0.71492,
    "c": 0.09667,
    "h": 216.5
  },
  "luminance": 0.37854
}

Semantic roles & 50–950 ramp

primary

#51B2CA

secondary

#D5ACA2

accent

#684BDD

background

#F9FCFD

surface

#F1F8FA

border

#CBD1D3

text

#0D1314

muted

#7E8283

Preview Lab

Preview with #51B2CA

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

Preview Lab → · Contrast checker → · Palette generator →