#51ACE0#51ACE0

#51ACE0 is a light, moderate cyan. Relative luminance 0.366; OKLCH L 71.0% C 0.115 H 236.6°. Best body text is #000000 at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#51ACE0
RGB	rgb(81, 172, 224)
HSL	hsl(202, 70%, 60%)
HSV	hsv(202, 64%, 88%)
CMYK	cmyk(63.8%, 23.2%, 0%, 12.2%)
CIE-LAB	lab(67.00, -11.40, -34.24)
CIE-LCH	lch(67.00, 36.09, 251.59°)
OKLab	oklab(71.04% -0.0633 -0.0961)
OKLCH	oklch(71.04% 0.115 236.6)
XYZ	xyz(31.5952, 36.6330, 75.9123)
Luminance	0.3664 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51ACE0 #E08551

analogous

#51E0CC #51ACE0 #5165E0

triadic

#51ACE0 #E051AC #ACE051

tetradic

#51ACE0 #CC51E0 #E08551 #65E051

square

#51ACE0 #CC51E0 #E08551 #65E051

split-complementary

#51ACE0 #E05165 #E0CC51

monochromatic

#1C6D9B #2591CF #51ACE0 #85C5E9 #B9DEF3

Accessibility & contrast

On white

2.52

#51ACE0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.33

#51ACE0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51ACE0

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51ACE0	#FFFFFF	#000000	##000000
##51ACE0	1.00	2.52	8.33	8.33
#FFFFFF	2.52	1.00	21.00	21.00
#000000	8.33	21.00	1.00	1.00
##000000	8.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94ABE2

Deuteranopia (green-blind)

#809DDF

Tritanopia (blue-blind)

#00B9BE

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #51ace0;
/* rgb */ color: rgb(81, 172, 224);
/* oklch */ color: oklch(71.0% 0.115 236.6);

Tailwind

colors: {
  custom: {
    50: '#8fc4ea',
    500: '#51ace0',
    950: '#000000',
  },
}

SCSS

$custom: #51ace0;
$custom-light: #8fc4ea;
$custom-dark: #000000;

JSON

{
  "hex": "#51ace0",
  "rgb": {
    "r": 81,
    "g": 172,
    "b": 224
  },
  "hsl": {
    "h": 201.818,
    "s": 69.756,
    "l": 59.804
  },
  "oklch": {
    "l": 0.71042,
    "c": 0.11507,
    "h": 236.6
  },
  "luminance": 0.36636
}

Semantic roles & 50–950 ramp

primary

#51ACE0

secondary

#E2BFAB

accent

#7C3BED

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51ACE0

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

Preview Lab → · Contrast checker → · Palette generator →