#51A3CD#51A3CD

#51A3CD is a light, moderate cyan. Relative luminance 0.324; OKLCH L 68.1% C 0.101 H 233.3°. Best body text is #000000 at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#51A3CD
RGB	rgb(81, 163, 205)
HSL	hsl(200, 55%, 56%)
HSV	hsv(200, 60%, 80%)
CMYK	cmyk(60.5%, 20.5%, 0%, 19.6%)
CIE-LAB	lab(63.63, -12.51, -28.96)
CIE-LCH	lch(63.63, 31.54, 246.63°)
OKLab	oklab(68.11% -0.0604 -0.081)
OKLCH	oklch(68.11% 0.101 233.3)
XYZ	xyz(27.5057, 32.3488, 62.5402)
Luminance	0.3235 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A3CD #CD7B51

analogous

#51CDB9 #51A3CD #5165CD

triadic

#51A3CD #CD51A3 #A3CD51

tetradic

#51A3CD #B951CD #CD7B51 #65CD51

square

#51A3CD #B951CD #CD7B51 #65CD51

split-complementary

#51A3CD #CD5165 #CDB951

monochromatic

#25607F #3284AF #51A3CD #81BCDB #B0D5E8

Accessibility & contrast

On white

2.81

#51A3CD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.47

#51A3CD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A3CD

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A3CD	#FFFFFF	#000000	##000000
##51A3CD	1.00	2.81	7.47	7.47
#FFFFFF	2.81	1.00	21.00	21.00
#000000	7.47	21.00	1.00	1.00
##000000	7.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8FA1CF

Deuteranopia (green-blind)

#7D94CC

Tritanopia (blue-blind)

#00AEB1

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #51a3cd;
/* rgb */ color: rgb(81, 163, 205);
/* oklch */ color: oklch(68.1% 0.101 233.3);

Tailwind

colors: {
  custom: {
    50: '#8dbedc',
    500: '#51a3cd',
    950: '#000000',
  },
}

SCSS

$custom: #51a3cd;
$custom-light: #8dbedc;
$custom-dark: #000000;

JSON

{
  "hex": "#51a3cd",
  "rgb": {
    "r": 81,
    "g": 163,
    "b": 205
  },
  "hsl": {
    "h": 200.323,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.6811,
    "c": 0.10101,
    "h": 233.3
  },
  "luminance": 0.32351
}

Semantic roles & 50–950 ramp

primary

#51A3CD

secondary

#D7B5A3

accent

#7C49DF

background

#F9FBFD

surface

#F1F6FB

border

#CBD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A3CD

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

Preview Lab → · Contrast checker → · Palette generator →