#51AEE1#51AEE1

#51AEE1 is a light, moderate cyan. Relative luminance 0.375; OKLCH L 71.5% C 0.115 H 235.6°. Best body text is #000000 at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#51AEE1
RGB	rgb(81, 174, 225)
HSL	hsl(201, 71%, 60%)
HSV	hsv(201, 64%, 88%)
CMYK	cmyk(64%, 22.7%, 0%, 11.8%)
CIE-LAB	lab(67.62, -12.17, -33.83)
CIE-LCH	lch(67.62, 35.95, 250.22°)
OKLab	oklab(71.54% -0.065 -0.0949)
OKLCH	oklch(71.54% 0.115 235.6)
XYZ	xyz(32.1147, 37.4544, 76.7565)
Luminance	0.3746 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AEE1 #E18451

analogous

#51E1CC #51AEE1 #5166E1

triadic

#51AEE1 #E151AE #AEE151

tetradic

#51AEE1 #CC51E1 #E18451 #66E151

square

#51AEE1 #CC51E1 #E18451 #66E151

split-complementary

#51AEE1 #E15166 #E1CC51

monochromatic

#1B6F9D #2494D1 #51AEE1 #85C6EA #B9DFF3

Accessibility & contrast

On white

2.47

#51AEE1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.49

#51AEE1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AEE1

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AEE1	#FFFFFF	#000000	##000000
##51AEE1	1.00	2.47	8.49	8.49
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.49	21.00	1.00	1.00
##000000	8.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#96ADE3

Deuteranopia (green-blind)

#829EE0

Tritanopia (blue-blind)

#00BBBF

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #51aee1;
/* rgb */ color: rgb(81, 174, 225);
/* oklch */ color: oklch(71.5% 0.115 235.6);

Tailwind

colors: {
  custom: {
    50: '#90c6ea',
    500: '#51aee1',
    950: '#000000',
  },
}

SCSS

$custom: #51aee1;
$custom-light: #90c6ea;
$custom-dark: #000000;

JSON

{
  "hex": "#51aee1",
  "rgb": {
    "r": 81,
    "g": 174,
    "b": 225
  },
  "hsl": {
    "h": 201.25,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.71544,
    "c": 0.11505,
    "h": 235.6
  },
  "luminance": 0.37458
}

Semantic roles & 50–950 ramp

primary

#51AEE1

secondary

#E3BFAB

accent

#7A3AED

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #51AEE1

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

Preview Lab → · Contrast checker → · Palette generator →