#51A3E3#51A3E3

#51A3E3 is a light, vivid cyan. Relative luminance 0.335; OKLCH L 69.1% C 0.124 H 244.6°. Best body text is #000000 at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#51A3E3
RGB	rgb(81, 163, 227)
HSL	hsl(206, 72%, 60%)
HSV	hsv(206, 64%, 89%)
CMYK	cmyk(64.3%, 28.2%, 0%, 11%)
CIE-LAB	lab(64.55, -5.46, -39.70)
CIE-LCH	lch(64.55, 40.08, 262.17°)
OKLab	oklab(69.15% -0.0532 -0.1119)
OKLCH	oklch(69.15% 0.124 244.6)
XYZ	xyz(30.3504, 33.4867, 77.5222)
Luminance	0.3349 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A3E3 #E39151

analogous

#51E3DA #51A3E3 #515AE3

triadic

#51A3E3 #E351A3 #A3E351

tetradic

#51A3E3 #DA51E3 #E39151 #5AE351

square

#51A3E3 #DA51E3 #E39151 #5AE351

split-complementary

#51A3E3 #E3515A #E3DA51

monochromatic

#1A65A0 #2286D5 #51A3E3 #86BFEB #BADBF4

Accessibility & contrast

On white

2.73

#51A3E3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.70

#51A3E3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A3E3

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A3E3	#FFFFFF	#000000	##000000
##51A3E3	1.00	2.73	7.70	7.70
#FFFFFF	2.73	1.00	21.00	21.00
#000000	7.70	21.00	1.00	1.00
##000000	7.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#87A4E6

Deuteranopia (green-blind)

#7396E2

Tritanopia (blue-blind)

#00B2B9

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51a3e3;
/* rgb */ color: rgb(81, 163, 227);
/* oklch */ color: oklch(69.1% 0.124 244.6);

Tailwind

colors: {
  custom: {
    50: '#8fbeec',
    500: '#51a3e3',
    950: '#000000',
  },
}

SCSS

$custom: #51a3e3;
$custom-light: #8fbeec;
$custom-dark: #000000;

JSON

{
  "hex": "#51a3e3",
  "rgb": {
    "r": 81,
    "g": 163,
    "b": 227
  },
  "hsl": {
    "h": 206.301,
    "s": 72.277,
    "l": 60.392
  },
  "oklch": {
    "l": 0.69146,
    "c": 0.12393,
    "h": 244.6
  },
  "luminance": 0.3349
}

Semantic roles & 50–950 ramp

primary

#51A3E3

secondary

#E4C4AC

accent

#6711D4

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A3E3

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

Preview Lab → · Contrast checker → · Palette generator →