#51A5CD#51A5CD

#51A5CD is a light, moderate cyan. Relative luminance 0.331; OKLCH L 68.6% C 0.100 H 231.4°. Best body text is #000000 at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#51A5CD
RGB	rgb(81, 165, 205)
HSL	hsl(199, 55%, 56%)
HSV	hsv(199, 60%, 80%)
CMYK	cmyk(60.5%, 19.5%, 0%, 19.6%)
CIE-LAB	lab(64.21, -13.59, -28.06)
CIE-LCH	lch(64.21, 31.18, 244.15°)
OKLab	oklab(68.57% -0.0626 -0.0784)
OKLCH	oklch(68.57% 0.1 231.4)
XYZ	xyz(27.8637, 33.0647, 62.6595)
Luminance	0.3307 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A5CD #CD7951

analogous

#51CDB7 #51A5CD #5167CD

triadic

#51A5CD #CD51A5 #A5CD51

tetradic

#51A5CD #B751CD #CD7951 #67CD51

square

#51A5CD #B751CD #CD7951 #67CD51

split-complementary

#51A5CD #CD5167 #CDB751

monochromatic

#25627F #3286AF #51A5CD #81BEDB #B0D6E8

Accessibility & contrast

On white

2.76

#51A5CD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.61

#51A5CD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A5CD

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A5CD	#FFFFFF	#000000	##000000
##51A5CD	1.00	2.76	7.61	7.61
#FFFFFF	2.76	1.00	21.00	21.00
#000000	7.61	21.00	1.00	1.00
##000000	7.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91A3CF

Deuteranopia (green-blind)

#8096CC

Tritanopia (blue-blind)

#00B0B2

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51a5cd;
/* rgb */ color: rgb(81, 165, 205);
/* oklch */ color: oklch(68.6% 0.100 231.4);

Tailwind

colors: {
  custom: {
    50: '#8dbfdc',
    500: '#51a5cd',
    950: '#000000',
  },
}

SCSS

$custom: #51a5cd;
$custom-light: #8dbfdc;
$custom-dark: #000000;

JSON

{
  "hex": "#51a5cd",
  "rgb": {
    "r": 81,
    "g": 165,
    "b": 205
  },
  "hsl": {
    "h": 199.355,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.68574,
    "c": 0.10029,
    "h": 231.4
  },
  "luminance": 0.33067
}

Semantic roles & 50–950 ramp

primary

#51A5CD

secondary

#D7B4A3

accent

#7949DF

background

#F9FBFD

surface

#F1F7FB

border

#CBD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A5CD

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

Preview Lab → · Contrast checker → · Palette generator →