#51A7CF#51A7CF

#51A7CF is a light, moderate cyan. Relative luminance 0.339; OKLCH L 69.1% C 0.101 H 230.9°. Best body text is #000000 at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#51A7CF
RGB	rgb(81, 167, 207)
HSL	hsl(199, 57%, 56%)
HSV	hsv(199, 61%, 81%)
CMYK	cmyk(60.9%, 19.3%, 0%, 18.8%)
CIE-LAB	lab(64.87, -14.05, -28.15)
CIE-LCH	lch(64.87, 31.46, 243.47°)
OKLab	oklab(69.13% -0.064 -0.0786)
OKLCH	oklch(69.13% 0.101 230.9)
XYZ	xyz(28.4702, 33.8890, 64.0602)
Luminance	0.3389 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A7CF #CF7951

analogous

#51CFB8 #51A7CF #5168CF

triadic

#51A7CF #CF51A7 #A7CF51

tetradic

#51A7CF #B851CF #CF7951 #68CF51

square

#51A7CF #B851CF #CF7951 #68CF51

split-complementary

#51A7CF #CF5168 #CFB851

monochromatic

#246482 #3189B2 #51A7CF #81BFDC #B1D8E9

Accessibility & contrast

On white

2.70

#51A7CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.78

#51A7CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A7CF

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A7CF	#FFFFFF	#000000	##000000
##51A7CF	1.00	2.70	7.78	7.78
#FFFFFF	2.70	1.00	21.00	21.00
#000000	7.78	21.00	1.00	1.00
##000000	7.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93A5D1

Deuteranopia (green-blind)

#8198CE

Tritanopia (blue-blind)

#00B2B4

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51a7cf;
/* rgb */ color: rgb(81, 167, 207);
/* oklch */ color: oklch(69.1% 0.101 230.9);

Tailwind

colors: {
  custom: {
    50: '#8dc1dd',
    500: '#51a7cf',
    950: '#000000',
  },
}

SCSS

$custom: #51a7cf;
$custom-light: #8dc1dd;
$custom-dark: #000000;

JSON

{
  "hex": "#51a7cf",
  "rgb": {
    "r": 81,
    "g": 167,
    "b": 207
  },
  "hsl": {
    "h": 199.048,
    "s": 56.757,
    "l": 56.471
  },
  "oklch": {
    "l": 0.69126,
    "c": 0.10138,
    "h": 230.9
  },
  "luminance": 0.33892
}

Semantic roles & 50–950 ramp

primary

#51A7CF

secondary

#D8B4A4

accent

#7848E0

background

#F9FBFD

surface

#F1F7FB

border

#CBD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A7CF

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

Preview Lab → · Contrast checker → · Palette generator →