#51A7C8#51A7C8

#51A7C8 is a light, moderate cyan. Relative luminance 0.336; OKLCH L 68.8% C 0.096 H 225.9°. Best body text is #000000 at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#51A7C8
RGB	rgb(81, 167, 200)
HSL	hsl(197, 52%, 55%)
HSV	hsv(197, 60%, 78%)
CMYK	cmyk(59.5%, 16.5%, 0%, 21.6%)
CIE-LAB	lab(64.61, -16.21, -24.67)
CIE-LCH	lch(64.61, 29.52, 236.69°)
OKLab	oklab(68.83% -0.0666 -0.0687)
OKLCH	oklch(68.83% 0.096 225.9)
XYZ	xyz(27.6333, 33.5542, 59.6527)
Luminance	0.3356 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A7C8 #C87251

analogous

#51C8AE #51A7C8 #516BC8

triadic

#51A7C8 #C851A7 #A7C851

tetradic

#51A7C8 #AE51C8 #C87251 #6BC851

square

#51A7C8 #AE51C8 #C87251 #6BC851

split-complementary

#51A7C8 #C8516B #C8AE51

monochromatic

#266279 #3587A7 #51A7C8 #80BFD7 #AED6E5

Accessibility & contrast

On white

2.72

#51A7C8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.71

#51A7C8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A7C8

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A7C8	#FFFFFF	#000000	##000000
##51A7C8	1.00	2.72	7.71	7.71
#FFFFFF	2.72	1.00	21.00	21.00
#000000	7.71	21.00	1.00	1.00
##000000	7.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95A4CA

Deuteranopia (green-blind)

#8497C8

Tritanopia (blue-blind)

#00B1B2

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51a7c8;
/* rgb */ color: rgb(81, 167, 200);
/* oklch */ color: oklch(68.8% 0.096 225.9);

Tailwind

colors: {
  custom: {
    50: '#8cc1d8',
    500: '#51a7c8',
    950: '#000000',
  },
}

SCSS

$custom: #51a7c8;
$custom-light: #8cc1d8;
$custom-dark: #000000;

JSON

{
  "hex": "#51a7c8",
  "rgb": {
    "r": 81,
    "g": 167,
    "b": 200
  },
  "hsl": {
    "h": 196.639,
    "s": 51.965,
    "l": 55.098
  },
  "oklch": {
    "l": 0.68825,
    "c": 0.09568,
    "h": 225.9
  },
  "luminance": 0.33557
}

Semantic roles & 50–950 ramp

primary

#51A7C8

secondary

#D3AFA1

accent

#744CDB

background

#F9FBFD

surface

#F1F7FA

border

#CBD0D3

text

#0D1214

muted

#7E8183

Preview Lab

Preview with #51A7C8

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

Preview Lab → · Contrast checker → · Palette generator →