#51C2DF#51C2DF

#51C2DF is a light, moderate cyan. Relative luminance 0.457; OKLCH L 76.1% C 0.109 H 217.7°. Best body text is #000000 at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#51C2DF
RGB	rgb(81, 194, 223)
HSL	hsl(192, 69%, 60%)
HSV	hsv(192, 64%, 87%)
CMYK	cmyk(63.7%, 13%, 0%, 12.5%)
CIE-LAB	lab(73.32, -23.25, -23.96)
CIE-LCH	lch(73.32, 33.39, 225.86°)
OKLab	oklab(76.08% -0.0863 -0.0667)
OKLCH	oklch(76.08% 0.109 217.7)
XYZ	xyz(35.9990, 45.6568, 76.7132)
Luminance	0.4566 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C2DF #DF6E51

analogous

#51DFB5 #51C2DF #517BDF

triadic

#51C2DF #DF51C2 #C2DF51

tetradic

#51C2DF #B551DF #DF6E51 #7BDF51

square

#51C2DF #B551DF #DF6E51 #7BDF51

split-complementary

#51C2DF #DF517B #DFB551

monochromatic

#1C8099 #26ABCD #51C2DF #85D4E9 #B8E6F2

Accessibility & contrast

On white

2.07

#51C2DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.13

#51C2DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C2DF

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C2DF	#FFFFFF	#000000	##000000
##51C2DF	1.00	2.07	10.13	10.13
#FFFFFF	2.07	1.00	21.00	21.00
#000000	10.13	21.00	1.00	1.00
##000000	10.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AFBDE1

Deuteranopia (green-blind)

#9BAEDF

Tritanopia (blue-blind)

#00CCCB

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #51c2df;
/* rgb */ color: rgb(81, 194, 223);
/* oklch */ color: oklch(76.1% 0.109 217.7);

Tailwind

colors: {
  custom: {
    50: '#90d4e9',
    500: '#51c2df',
    950: '#000000',
  },
}

SCSS

$custom: #51c2df;
$custom-light: #90d4e9;
$custom-dark: #000000;

JSON

{
  "hex": "#51c2df",
  "rgb": {
    "r": 81,
    "g": 194,
    "b": 223
  },
  "hsl": {
    "h": 192.254,
    "s": 68.932,
    "l": 59.608
  },
  "oklch": {
    "l": 0.76076,
    "c": 0.10903,
    "h": 217.7
  },
  "luminance": 0.45661
}

Semantic roles & 50–950 ramp

primary

#51C2DF

secondary

#E1B6AA

accent

#603CEC

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C2DF

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

Preview Lab → · Contrast checker → · Palette generator →