#51A8D7#51A8D7

#51A8D7 is a light, moderate cyan. Relative luminance 0.347; OKLCH L 69.7% C 0.108 H 234.9°. Best body text is #000000 at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#51A8D7
RGB	rgb(81, 168, 215)
HSL	hsl(201, 63%, 58%)
HSV	hsv(201, 62%, 84%)
CMYK	cmyk(62.3%, 21.9%, 0%, 15.7%)
CIE-LAB	lab(65.48, -12.08, -31.64)
CIE-LCH	lch(65.48, 33.87, 249.10°)
OKLab	oklab(69.71% -0.0622 -0.0886)
OKLCH	oklch(69.71% 0.108 234.9)
XYZ	xyz(29.6570, 34.6579, 69.4035)
Luminance	0.3466 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A8D7 #D78051

analogous

#51D7C3 #51A8D7 #5165D7

triadic

#51A8D7 #D751A8 #A8D751

tetradic

#51A8D7 #C351D7 #D78051 #65D751

square

#51A8D7 #C351D7 #D78051 #65D751

split-complementary

#51A8D7 #D75165 #D7C351

monochromatic

#20678D #2C8BBF #51A8D7 #83C1E2 #B5DAEE

Accessibility & contrast

On white

2.65

#51A8D7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.93

#51A8D7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A8D7

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A8D7	#FFFFFF	#000000	##000000
##51A8D7	1.00	2.65	7.93	7.93
#FFFFFF	2.65	1.00	21.00	21.00
#000000	7.93	21.00	1.00	1.00
##000000	7.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92A7D9

Deuteranopia (green-blind)

#7F99D6

Tritanopia (blue-blind)

#00B4B8

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #51a8d7;
/* rgb */ color: rgb(81, 168, 215);
/* oklch */ color: oklch(69.7% 0.108 234.9);

Tailwind

colors: {
  custom: {
    50: '#8ec1e3',
    500: '#51a8d7',
    950: '#000000',
  },
}

SCSS

$custom: #51a8d7;
$custom-light: #8ec1e3;
$custom-dark: #000000;

JSON

{
  "hex": "#51a8d7",
  "rgb": {
    "r": 81,
    "g": 168,
    "b": 215
  },
  "hsl": {
    "h": 201.045,
    "s": 62.617,
    "l": 58.039
  },
  "oklch": {
    "l": 0.69714,
    "c": 0.10829,
    "h": 234.9
  },
  "luminance": 0.34661
}

Semantic roles & 50–950 ramp

primary

#51A8D7

secondary

#DDBAA7

accent

#7B42E6

background

#F9FBFD

surface

#F2F7FB

border

#CCD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A8D7

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

Preview Lab → · Contrast checker → · Palette generator →