#51C7ED#51C7ED

#51C7ED is a light, moderate cyan. Relative luminance 0.487; OKLCH L 77.8% C 0.117 H 222.8°. Best body text is #000000 at 10.74:1 contrast (WCAG AA passes).

Color values

HEX	#51C7ED
RGB	rgb(81, 199, 237)
HSL	hsl(195, 81%, 62%)
HSV	hsv(195, 66%, 93%)
CMYK	cmyk(65.8%, 16%, 0%, 7.1%)
CIE-LAB	lab(75.27, -21.55, -28.54)
CIE-LCH	lch(75.27, 35.76, 232.95°)
OKLab	oklab(77.8% -0.086 -0.0797)
OKLCH	oklch(77.8% 0.117 222.8)
XYZ	xyz(39.0966, 48.7064, 87.4451)
Luminance	0.4871 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C7ED #ED7751

analogous

#51EDC5 #51C7ED #5179ED

triadic

#51C7ED #ED51C7 #C7ED51

tetradic

#51C7ED #C551ED #ED7751 #79ED51

square

#51C7ED #C551ED #ED7751 #79ED51

split-complementary

#51C7ED #ED5179 #EDC551

monochromatic

#128BB1 #1AB5E7 #51C7ED #88D9F3 #C0EBF8

Accessibility & contrast

On white

1.95

#51C7ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.74

#51C7ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C7ED

10.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C7ED	#FFFFFF	#000000	##000000
##51C7ED	1.00	1.95	10.74	10.74
#FFFFFF	1.95	1.00	21.00	21.00
#000000	10.74	21.00	1.00	1.00
##000000	10.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1C2EF

Deuteranopia (green-blind)

#9BB2ED

Tritanopia (blue-blind)

#00D3D3

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #51c7ed;
/* rgb */ color: rgb(81, 199, 237);
/* oklch */ color: oklch(77.8% 0.117 222.8);

Tailwind

colors: {
  custom: {
    50: '#92d8f3',
    500: '#51c7ed',
    950: '#000000',
  },
}

SCSS

$custom: #51c7ed;
$custom-light: #92d8f3;
$custom-dark: #000000;

JSON

{
  "hex": "#51c7ed",
  "rgb": {
    "r": 81,
    "g": 199,
    "b": 237
  },
  "hsl": {
    "h": 194.615,
    "s": 81.25,
    "l": 62.353
  },
  "oklch": {
    "l": 0.77802,
    "c": 0.11727,
    "h": 222.8
  },
  "luminance": 0.48711
}

Semantic roles & 50–950 ramp

primary

#51C7ED

secondary

#E9BEB0

accent

#3C08DE

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1417

muted

#7E8385

Preview Lab

Preview with #51C7ED

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

Preview Lab → · Contrast checker → · Palette generator →