#51AEE3#51AEE3

#51AEE3 is a light, moderate cyan. Relative luminance 0.376; OKLCH L 71.6% C 0.117 H 236.6°. Best body text is #000000 at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#51AEE3
RGB	rgb(81, 174, 227)
HSL	hsl(202, 72%, 60%)
HSV	hsv(202, 64%, 89%)
CMYK	cmyk(64.3%, 23.3%, 0%, 11%)
CIE-LAB	lab(67.70, -11.53, -34.80)
CIE-LCH	lch(67.70, 36.66, 251.67°)
OKLab	oklab(71.64% -0.0644 -0.0977)
OKLCH	oklch(71.64% 0.117 236.6)
XYZ	xyz(32.3892, 37.5641, 78.2018)
Luminance	0.3757 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AEE3 #E38651

analogous

#51E3CF #51AEE3 #5165E3

triadic

#51AEE3 #E351AE #AEE351

tetradic

#51AEE3 #CF51E3 #E38651 #65E351

square

#51AEE3 #CF51E3 #E38651 #65E351

split-complementary

#51AEE3 #E35165 #E3CF51

monochromatic

#1A6FA0 #2294D5 #51AEE3 #86C7EB #BADFF4

Accessibility & contrast

On white

2.47

#51AEE3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.51

#51AEE3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AEE3

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AEE3	#FFFFFF	#000000	##000000
##51AEE3	1.00	2.47	8.51	8.51
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.51	21.00	1.00	1.00
##000000	8.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95ADE5

Deuteranopia (green-blind)

#819EE2

Tritanopia (blue-blind)

#00BCC0

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #51aee3;
/* rgb */ color: rgb(81, 174, 227);
/* oklch */ color: oklch(71.6% 0.117 236.6);

Tailwind

colors: {
  custom: {
    50: '#90c6ec',
    500: '#51aee3',
    950: '#000000',
  },
}

SCSS

$custom: #51aee3;
$custom-light: #90c6ec;
$custom-dark: #000000;

JSON

{
  "hex": "#51aee3",
  "rgb": {
    "r": 81,
    "g": 174,
    "b": 227
  },
  "hsl": {
    "h": 201.781,
    "s": 72.277,
    "l": 60.392
  },
  "oklch": {
    "l": 0.71636,
    "c": 0.11699,
    "h": 236.6
  },
  "luminance": 0.37567
}

Semantic roles & 50–950 ramp

primary

#51AEE3

secondary

#E4C0AC

accent

#5811D4

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #51AEE3

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

Preview Lab → · Contrast checker → · Palette generator →