#51AAE1#51AAE1

#51AAE1 is a light, moderate cyan. Relative luminance 0.359; OKLCH L 70.6% C 0.117 H 238.7°. Best body text is #000000 at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#51AAE1
RGB	rgb(81, 170, 225)
HSL	hsl(203, 71%, 60%)
HSV	hsv(203, 64%, 88%)
CMYK	cmyk(64%, 24.4%, 0%, 11.8%)
CIE-LAB	lab(66.47, -9.99, -35.62)
CIE-LCH	lch(66.47, 36.99, 254.34°)
OKLab	oklab(70.63% -0.0609 -0.1001)
OKLCH	oklch(70.63% 0.117 238.7)
XYZ	xyz(31.3535, 35.9318, 76.5027)
Luminance	0.3594 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AAE1 #E18851

analogous

#51E1D0 #51AAE1 #5162E1

triadic

#51AAE1 #E151AA #AAE151

tetradic

#51AAE1 #D051E1 #E18851 #62E151

square

#51AAE1 #D051E1 #E18851 #62E151

split-complementary

#51AAE1 #E15162 #E1D051

monochromatic

#1B6B9D #248FD1 #51AAE1 #85C3EA #B9DDF3

Accessibility & contrast

On white

2.57

#51AAE1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.19

#51AAE1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AAE1

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AAE1	#FFFFFF	#000000	##000000
##51AAE1	1.00	2.57	8.19	8.19
#FFFFFF	2.57	1.00	21.00	21.00
#000000	8.19	21.00	1.00	1.00
##000000	8.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91AAE4

Deuteranopia (green-blind)

#7D9BE0

Tritanopia (blue-blind)

#00B8BD

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #51aae1;
/* rgb */ color: rgb(81, 170, 225);
/* oklch */ color: oklch(70.6% 0.117 238.7);

Tailwind

colors: {
  custom: {
    50: '#8fc3ea',
    500: '#51aae1',
    950: '#000000',
  },
}

SCSS

$custom: #51aae1;
$custom-light: #8fc3ea;
$custom-dark: #000000;

JSON

{
  "hex": "#51aae1",
  "rgb": {
    "r": 81,
    "g": 170,
    "b": 225
  },
  "hsl": {
    "h": 202.917,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.70633,
    "c": 0.11716,
    "h": 238.7
  },
  "luminance": 0.35935
}

Semantic roles & 50–950 ramp

primary

#51AAE1

secondary

#E3C0AB

accent

#7F3AED

background

#F9FBFE

surface

#F2F7FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51AAE1

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

Preview Lab → · Contrast checker → · Palette generator →