#51ABD9#51ABD9

#51ABD9 is a light, moderate cyan. Relative luminance 0.359; OKLCH L 70.5% C 0.109 H 233.5°. Best body text is #000000 at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#51ABD9
RGB	rgb(81, 171, 217)
HSL	hsl(200, 64%, 58%)
HSV	hsv(200, 63%, 85%)
CMYK	cmyk(62.7%, 21.2%, 0%, 14.9%)
CIE-LAB	lab(66.43, -13.08, -31.27)
CIE-LCH	lch(66.43, 33.90, 247.31°)
OKLab	oklab(70.49% -0.0647 -0.0876)
OKLCH	oklch(70.49% 0.109 233.5)
XYZ	xyz(30.4758, 35.8818, 70.9520)
Luminance	0.3589 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51ABD9 #D97F51

analogous

#51D9C3 #51ABD9 #5167D9

triadic

#51ABD9 #D951AB #ABD951

tetradic

#51ABD9 #C351D9 #D97F51 #67D951

square

#51ABD9 #C351D9 #D97F51 #67D951

split-complementary

#51ABD9 #D95167 #D9C351

monochromatic

#1F6A90 #2A8FC2 #51ABD9 #83C3E4 #B5DBEF

Accessibility & contrast

On white

2.57

#51ABD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.18

#51ABD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51ABD9

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51ABD9	#FFFFFF	#000000	##000000
##51ABD9	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)

#95A9DB

Deuteranopia (green-blind)

#829BD8

Tritanopia (blue-blind)

#00B7BA

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #51abd9;
/* rgb */ color: rgb(81, 171, 217);
/* oklch */ color: oklch(70.5% 0.109 233.5);

Tailwind

colors: {
  custom: {
    50: '#8ec4e5',
    500: '#51abd9',
    950: '#000000',
  },
}

SCSS

$custom: #51abd9;
$custom-light: #8ec4e5;
$custom-dark: #000000;

JSON

{
  "hex": "#51abd9",
  "rgb": {
    "r": 81,
    "g": 171,
    "b": 217
  },
  "hsl": {
    "h": 200.294,
    "s": 64.151,
    "l": 58.431
  },
  "oklch": {
    "l": 0.70494,
    "c": 0.10887,
    "h": 233.5
  },
  "luminance": 0.35885
}

Semantic roles & 50–950 ramp

primary

#51ABD9

secondary

#DEBAA8

accent

#7941E7

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0D1215

muted

#7E8184

Preview Lab

Preview with #51ABD9

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

Preview Lab → · Contrast checker → · Palette generator →