#51C4ED#51C4ED

#51C4ED is a light, moderate cyan. Relative luminance 0.473; OKLCH L 77.1% C 0.118 H 225.1°. Best body text is #000000 at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#51C4ED
RGB	rgb(81, 196, 237)
HSL	hsl(196, 81%, 62%)
HSV	hsv(196, 66%, 93%)
CMYK	cmyk(65.8%, 17.3%, 0%, 7.1%)
CIE-LAB	lab(74.41, -20.01, -29.87)
CIE-LCH	lch(74.41, 35.95, 236.18°)
OKLab	oklab(77.11% -0.0831 -0.0834)
OKLCH	oklch(77.11% 0.118 225.1)
XYZ	xyz(38.4132, 47.3395, 87.2173)
Luminance	0.4734 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C4ED #ED7A51

analogous

#51EDC8 #51C4ED #5176ED

triadic

#51C4ED #ED51C4 #C4ED51

tetradic

#51C4ED #C851ED #ED7A51 #76ED51

square

#51C4ED #C851ED #ED7A51 #76ED51

split-complementary

#51C4ED #ED5176 #EDC851

monochromatic

#1287B1 #1AB1E7 #51C4ED #88D7F3 #C0EAF8

Accessibility & contrast

On white

2.01

#51C4ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.47

#51C4ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C4ED

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C4ED	#FFFFFF	#000000	##000000
##51C4ED	1.00	2.01	10.47	10.47
#FFFFFF	2.01	1.00	21.00	21.00
#000000	10.47	21.00	1.00	1.00
##000000	10.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ADC0EF

Deuteranopia (green-blind)

#98B0ED

Tritanopia (blue-blind)

#00D0D1

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #51c4ed;
/* rgb */ color: rgb(81, 196, 237);
/* oklch */ color: oklch(77.1% 0.118 225.1);

Tailwind

colors: {
  custom: {
    50: '#92d6f3',
    500: '#51c4ed',
    950: '#000000',
  },
}

SCSS

$custom: #51c4ed;
$custom-light: #92d6f3;
$custom-dark: #000000;

JSON

{
  "hex": "#51c4ed",
  "rgb": {
    "r": 81,
    "g": 196,
    "b": 237
  },
  "hsl": {
    "h": 195.769,
    "s": 81.25,
    "l": 62.353
  },
  "oklch": {
    "l": 0.77112,
    "c": 0.11774,
    "h": 225.1
  },
  "luminance": 0.47344
}

Semantic roles & 50–950 ramp

primary

#51C4ED

secondary

#E9BFB0

accent

#4008DE

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1417

muted

#7E8385

Preview Lab

Preview with #51C4ED

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

Preview Lab → · Contrast checker → · Palette generator →