#51A2D8#51A2D8

#51A2D8 is a light, moderate cyan. Relative luminance 0.325; OKLCH L 68.4% C 0.113 H 240.4°. Best body text is #000000 at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#51A2D8
RGB	rgb(81, 162, 216)
HSL	hsl(204, 63%, 58%)
HSV	hsv(204, 63%, 85%)
CMYK	cmyk(62.5%, 25%, 0%, 15.3%)
CIE-LAB	lab(63.79, -8.47, -34.81)
CIE-LCH	lch(63.79, 35.83, 256.33°)
OKLab	oklab(68.39% -0.0556 -0.0978)
OKLCH	oklch(68.39% 0.113 240.4)
XYZ	xyz(28.7036, 32.5450, 69.7216)
Luminance	0.3255 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A2D8 #D88751

analogous

#51D8CA #51A2D8 #515ED8

triadic

#51A2D8 #D851A2 #A2D851

tetradic

#51A2D8 #CA51D8 #D88751 #5ED851

square

#51A2D8 #CA51D8 #D88751 #5ED851

split-complementary

#51A2D8 #D8515E #D8CA51

monochromatic

#20628F #2B85C1 #51A2D8 #83BDE3 #B5D7EE

Accessibility & contrast

On white

2.80

#51A2D8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.51

#51A2D8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A2D8

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A2D8	#FFFFFF	#000000	##000000
##51A2D8	1.00	2.80	7.51	7.51
#FFFFFF	2.80	1.00	21.00	21.00
#000000	7.51	21.00	1.00	1.00
##000000	7.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8AA2DA

Deuteranopia (green-blind)

#7795D7

Tritanopia (blue-blind)

#00AFB4

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #51a2d8;
/* rgb */ color: rgb(81, 162, 216);
/* oklch */ color: oklch(68.4% 0.113 240.4);

Tailwind

colors: {
  custom: {
    50: '#8ebde4',
    500: '#51a2d8',
    950: '#000000',
  },
}

SCSS

$custom: #51a2d8;
$custom-light: #8ebde4;
$custom-dark: #000000;

JSON

{
  "hex": "#51a2d8",
  "rgb": {
    "r": 81,
    "g": 162,
    "b": 216
  },
  "hsl": {
    "h": 204,
    "s": 63.38,
    "l": 58.235
  },
  "oklch": {
    "l": 0.68386,
    "c": 0.1125,
    "h": 240.4
  },
  "luminance": 0.32548
}

Semantic roles & 50–950 ramp

primary

#51A2D8

secondary

#DDBDA8

accent

#8341E6

background

#F9FBFD

surface

#F2F6FB

border

#CCD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A2D8

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

Preview Lab → · Contrast checker → · Palette generator →