#51BAE0#51BAE0

#51BAE0 is a light, moderate cyan. Relative luminance 0.422; OKLCH L 74.3% C 0.110 H 225.2°. Best body text is #000000 at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#51BAE0
RGB	rgb(81, 186, 224)
HSL	hsl(196, 70%, 60%)
HSV	hsv(196, 64%, 88%)
CMYK	cmyk(63.8%, 17%, 0%, 12.2%)
CIE-LAB	lab(71.04, -18.84, -28.00)
CIE-LCH	lch(71.04, 33.75, 236.06°)
OKLab	oklab(74.26% -0.0777 -0.0781)
OKLCH	oklch(74.26% 0.11 225.2)
XYZ	xyz(34.4014, 42.2453, 76.8477)
Luminance	0.4225 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BAE0 #E07751

analogous

#51E0BE #51BAE0 #5173E0

triadic

#51BAE0 #E051BA #BAE051

tetradic

#51BAE0 #BE51E0 #E07751 #73E051

square

#51BAE0 #BE51E0 #E07751 #73E051

split-complementary

#51BAE0 #E05173 #E0BE51

monochromatic

#1C799B #25A2CF #51BAE0 #85CFE9 #B9E3F3

Accessibility & contrast

On white

2.22

#51BAE0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.45

#51BAE0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BAE0

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BAE0	#FFFFFF	#000000	##000000
##51BAE0	1.00	2.22	9.45	9.45
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.45	21.00	1.00	1.00
##000000	9.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5B6E2

Deuteranopia (green-blind)

#91A7E0

Tritanopia (blue-blind)

#00C5C6

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #51bae0;
/* rgb */ color: rgb(81, 186, 224);
/* oklch */ color: oklch(74.3% 0.110 225.2);

Tailwind

colors: {
  custom: {
    50: '#90cee9',
    500: '#51bae0',
    950: '#000000',
  },
}

SCSS

$custom: #51bae0;
$custom-light: #90cee9;
$custom-dark: #000000;

JSON

{
  "hex": "#51bae0",
  "rgb": {
    "r": 81,
    "g": 186,
    "b": 224
  },
  "hsl": {
    "h": 195.944,
    "s": 69.756,
    "l": 59.804
  },
  "oklch": {
    "l": 0.7426,
    "c": 0.1102,
    "h": 225.2
  },
  "luminance": 0.42249
}

Semantic roles & 50–950 ramp

primary

#51BAE0

secondary

#E2B9AB

accent

#6A3BED

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #51BAE0

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

Preview Lab → · Contrast checker → · Palette generator →