#51C8E2#51C8E2

#51C8E2 is a light, moderate cyan. Relative luminance 0.485; OKLCH L 77.6% C 0.111 H 214.8°. Best body text is #000000 at 10.71:1 contrast (WCAG AA passes).

Color values

HEX	#51C8E2
RGB	rgb(81, 200, 226)
HSL	hsl(191, 71%, 60%)
HSV	hsv(191, 64%, 89%)
CMYK	cmyk(64.2%, 11.5%, 0%, 11.4%)
CIE-LAB	lab(75.17, -25.37, -22.77)
CIE-LCH	lch(75.17, 34.09, 221.91°)
OKLab	oklab(77.59% -0.0912 -0.0633)
OKLCH	oklch(77.59% 0.111 214.8)
XYZ	xyz(37.7694, 48.5448, 79.3163)
Luminance	0.4855 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C8E2 #E26B51

analogous

#51E2B4 #51C8E2 #517FE2

triadic

#51C8E2 #E251C8 #C8E251

tetradic

#51C8E2 #B451E2 #E26B51 #7FE251

square

#51C8E2 #B451E2 #E26B51 #7FE251

split-complementary

#51C8E2 #E2517F #E2B451

monochromatic

#1A879E #23B3D3 #51C8E2 #85D9EB #BAE9F3

Accessibility & contrast

On white

1.96

#51C8E2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.71

#51C8E2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C8E2

10.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C8E2	#FFFFFF	#000000	##000000
##51C8E2	1.00	1.96	10.71	10.71
#FFFFFF	1.96	1.00	21.00	21.00
#000000	10.71	21.00	1.00	1.00
##000000	10.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5C2E3

Deuteranopia (green-blind)

#A0B2E2

Tritanopia (blue-blind)

#00D2D0

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #51c8e2;
/* rgb */ color: rgb(81, 200, 226);
/* oklch */ color: oklch(77.6% 0.111 214.8);

Tailwind

colors: {
  custom: {
    50: '#91d9eb',
    500: '#51c8e2',
    950: '#000000',
  },
}

SCSS

$custom: #51c8e2;
$custom-light: #91d9eb;
$custom-dark: #000000;

JSON

{
  "hex": "#51c8e2",
  "rgb": {
    "r": 81,
    "g": 200,
    "b": 226
  },
  "hsl": {
    "h": 190.759,
    "s": 71.429,
    "l": 60.196
  },
  "oklch": {
    "l": 0.77592,
    "c": 0.11103,
    "h": 214.8
  },
  "luminance": 0.48549
}

Semantic roles & 50–950 ramp

primary

#51C8E2

secondary

#E3B6AC

accent

#3512D3

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C8E2

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

Preview Lab → · Contrast checker → · Palette generator →