#51A0DA#51A0DA

#51A0DA is a light, moderate cyan. Relative luminance 0.320; OKLCH L 68.0% C 0.116 H 242.9°. Best body text is #000000 at 7.39:1 contrast (WCAG AA passes).

Color values

HEX	#51A0DA
RGB	rgb(81, 160, 218)
HSL	hsl(205, 65%, 59%)
HSV	hsv(205, 63%, 85%)
CMYK	cmyk(62.8%, 26.6%, 0%, 14.5%)
CIE-LAB	lab(63.30, -6.71, -36.68)
CIE-LCH	lch(63.30, 37.29, 259.64°)
OKLab	oklab(68.03% -0.0529 -0.1032)
OKLCH	oklch(68.03% 0.116 242.9)
XYZ	xyz(28.6143, 31.9501, 70.9751)
Luminance	0.3195 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A0DA #DA8B51

analogous

#51DACF #51A0DA #515BDA

triadic

#51A0DA #DA51A0 #A0DA51

tetradic

#51A0DA #CF51DA #DA8B51 #5BDA51

square

#51A0DA #CF51DA #DA8B51 #5BDA51

split-complementary

#51A0DA #DA515B #DACF51

monochromatic

#1F6192 #2A83C4 #51A0DA #83BCE5 #B6D7EF

Accessibility & contrast

On white

2.84

#51A0DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.39

#51A0DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A0DA

7.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A0DA	#FFFFFF	#000000	##000000
##51A0DA	1.00	2.84	7.39	7.39
#FFFFFF	2.84	1.00	21.00	21.00
#000000	7.39	21.00	1.00	1.00
##000000	7.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#86A1DD

Deuteranopia (green-blind)

#7393D9

Tritanopia (blue-blind)

#00AEB4

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #51a0da;
/* rgb */ color: rgb(81, 160, 218);
/* oklch */ color: oklch(68.0% 0.116 242.9);

Tailwind

colors: {
  custom: {
    50: '#8ebbe5',
    500: '#51a0da',
    950: '#000000',
  },
}

SCSS

$custom: #51a0da;
$custom-light: #8ebbe5;
$custom-dark: #000000;

JSON

{
  "hex": "#51a0da",
  "rgb": {
    "r": 81,
    "g": 160,
    "b": 218
  },
  "hsl": {
    "h": 205.401,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.68028,
    "c": 0.11598,
    "h": 242.9
  },
  "luminance": 0.31953
}

Semantic roles & 50–950 ramp

primary

#51A0DA

secondary

#DEBFA8

accent

#8740E8

background

#F9FBFE

surface

#F2F6FC

border

#CCD0D5

text

#0D1116

muted

#7E8084

Preview Lab

Preview with #51A0DA

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

Preview Lab → · Contrast checker → · Palette generator →