#51AAE0#51AAE0

#51AAE0 is a light, moderate cyan. Relative luminance 0.359; OKLCH L 70.6% C 0.116 H 238.2°. Best body text is #000000 at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#51AAE0
RGB	rgb(81, 170, 224)
HSL	hsl(203, 70%, 60%)
HSV	hsv(203, 64%, 88%)
CMYK	cmyk(63.8%, 24.1%, 0%, 12.2%)
CIE-LAB	lab(66.43, -10.31, -35.13)
CIE-LCH	lch(66.43, 36.61, 253.65°)
OKLab	oklab(70.59% -0.0613 -0.0987)
OKLCH	oklch(70.59% 0.116 238.2)
XYZ	xyz(31.2175, 35.8774, 75.7864)
Luminance	0.3588 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AAE0 #E08751

analogous

#51E0CE #51AAE0 #5163E0

triadic

#51AAE0 #E051AA #AAE051

tetradic

#51AAE0 #CE51E0 #E08751 #63E051

square

#51AAE0 #CE51E0 #E08751 #63E051

split-complementary

#51AAE0 #E05163 #E0CE51

monochromatic

#1C6B9B #258FCF #51AAE0 #85C3E9 #B9DDF3

Accessibility & contrast

On white

2.57

#51AAE0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.18

#51AAE0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AAE0

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AAE0	#FFFFFF	#000000	##000000
##51AAE0	1.00	2.57	8.18	8.18
#FFFFFF	2.57	1.00	21.00	21.00
#000000	8.18	21.00	1.00	1.00
##000000	8.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91AAE3

Deuteranopia (green-blind)

#7D9BDF

Tritanopia (blue-blind)

#00B8BC

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #51aae0;
/* rgb */ color: rgb(81, 170, 224);
/* oklch */ color: oklch(70.6% 0.116 238.2);

Tailwind

colors: {
  custom: {
    50: '#8fc3ea',
    500: '#51aae0',
    950: '#000000',
  },
}

SCSS

$custom: #51aae0;
$custom-light: #8fc3ea;
$custom-dark: #000000;

JSON

{
  "hex": "#51aae0",
  "rgb": {
    "r": 81,
    "g": 170,
    "b": 224
  },
  "hsl": {
    "h": 202.657,
    "s": 69.756,
    "l": 59.804
  },
  "oklch": {
    "l": 0.70586,
    "c": 0.11615,
    "h": 238.2
  },
  "luminance": 0.35881
}

Semantic roles & 50–950 ramp

primary

#51AAE0

secondary

#E2C0AB

accent

#7E3BED

background

#F9FBFE

surface

#F2F7FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51AAE0

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

Preview Lab → · Contrast checker → · Palette generator →