#51AACE#51AACE

#51AACE is a light, moderate cyan. Relative luminance 0.350; OKLCH L 69.8% C 0.100 H 227.4°. Best body text is #000000 at 7.99:1 contrast (WCAG AA passes).

Color values

HEX	#51AACE
RGB	rgb(81, 170, 206)
HSL	hsl(197, 56%, 56%)
HSV	hsv(197, 61%, 81%)
CMYK	cmyk(60.7%, 17.5%, 0%, 19.2%)
CIE-LAB	lab(65.71, -15.97, -26.31)
CIE-LCH	lch(65.71, 30.77, 238.74°)
OKLab	oklab(69.78% -0.0676 -0.0734)
OKLCH	oklch(69.78% 0.1 227.4)
XYZ	xyz(28.9043, 34.9521, 63.6037)
Luminance	0.3496 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AACE #CE7551

analogous

#51CEB4 #51AACE #516CCE

triadic

#51AACE #CE51AA #AACE51

tetradic

#51AACE #B451CE #CE7551 #6CCE51

square

#51AACE #B451CE #CE7551 #6CCE51

split-complementary

#51AACE #CE516C #CEB451

monochromatic

#246680 #328CB0 #51AACE #81C1DB #B1D9E9

Accessibility & contrast

On white

2.63

#51AACE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.99

#51AACE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AACE

7.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AACE	#FFFFFF	#000000	##000000
##51AACE	1.00	2.63	7.99	7.99
#FFFFFF	2.63	1.00	21.00	21.00
#000000	7.99	21.00	1.00	1.00
##000000	7.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97A7D0

Deuteranopia (green-blind)

#859ACE

Tritanopia (blue-blind)

#00B4B6

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #51aace;
/* rgb */ color: rgb(81, 170, 206);
/* oklch */ color: oklch(69.8% 0.100 227.4);

Tailwind

colors: {
  custom: {
    50: '#8dc3dd',
    500: '#51aace',
    950: '#000000',
  },
}

SCSS

$custom: #51aace;
$custom-light: #8dc3dd;
$custom-dark: #000000;

JSON

{
  "hex": "#51aace",
  "rgb": {
    "r": 81,
    "g": 170,
    "b": 206
  },
  "hsl": {
    "h": 197.28,
    "s": 56.054,
    "l": 56.275
  },
  "oklch": {
    "l": 0.69781,
    "c": 0.09974,
    "h": 227.4
  },
  "luminance": 0.34955
}

Semantic roles & 50–950 ramp

primary

#51AACE

secondary

#D7B2A4

accent

#7448DF

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51AACE

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

Preview Lab → · Contrast checker → · Palette generator →