#51C3E7#51C3E7

#51C3E7 is a light, moderate cyan. Relative luminance 0.465; OKLCH L 76.6% C 0.114 H 222.2°. Best body text is #000000 at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#51C3E7
RGB	rgb(81, 195, 231)
HSL	hsl(194, 76%, 61%)
HSV	hsv(194, 65%, 91%)
CMYK	cmyk(64.9%, 15.6%, 0%, 9.4%)
CIE-LAB	lab(73.90, -21.34, -27.41)
CIE-LCH	lch(73.90, 34.74, 232.10°)
OKLab	oklab(76.63% -0.0843 -0.0764)
OKLCH	oklch(76.63% 0.114 222.2)
XYZ	xyz(37.3264, 46.5451, 82.6027)
Luminance	0.4655 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C3E7 #E77551

analogous

#51E7C0 #51C3E7 #5178E7

triadic

#51C3E7 #E751C3 #C3E751

tetradic

#51C3E7 #C051E7 #E77551 #78E751

square

#51C3E7 #C051E7 #E77551 #78E751

split-complementary

#51C3E7 #E75178 #E7C051

monochromatic

#1784A7 #1EAFDC #51C3E7 #87D6EE #BDE8F6

Accessibility & contrast

On white

2.04

#51C3E7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.31

#51C3E7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C3E7

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C3E7	#FFFFFF	#000000	##000000
##51C3E7	1.00	2.04	10.31	10.31
#FFFFFF	2.04	1.00	21.00	21.00
#000000	10.31	21.00	1.00	1.00
##000000	10.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEBEE9

Deuteranopia (green-blind)

#99AFE7

Tritanopia (blue-blind)

#00CECE

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #51c3e7;
/* rgb */ color: rgb(81, 195, 231);
/* oklch */ color: oklch(76.6% 0.114 222.2);

Tailwind

colors: {
  custom: {
    50: '#91d5ee',
    500: '#51c3e7',
    950: '#000000',
  },
}

SCSS

$custom: #51c3e7;
$custom-light: #91d5ee;
$custom-dark: #000000;

JSON

{
  "hex": "#51c3e7",
  "rgb": {
    "r": 81,
    "g": 195,
    "b": 231
  },
  "hsl": {
    "h": 194.4,
    "s": 75.758,
    "l": 61.176
  },
  "oklch": {
    "l": 0.76632,
    "c": 0.11377,
    "h": 222.2
  },
  "luminance": 0.46549
}

Semantic roles & 50–950 ramp

primary

#51C3E7

secondary

#E6BBAE

accent

#3E0ED8

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C3E7

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

Preview Lab → · Contrast checker → · Palette generator →