#51A4CC#51A4CC

#51A4CC is a light, moderate cyan. Relative luminance 0.327; OKLCH L 68.3% C 0.100 H 231.7°. Best body text is #000000 at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#51A4CC
RGB	rgb(81, 164, 204)
HSL	hsl(200, 55%, 56%)
HSV	hsv(200, 60%, 80%)
CMYK	cmyk(60.3%, 19.6%, 0%, 20%)
CIE-LAB	lab(63.88, -13.37, -28.01)
CIE-LCH	lch(63.88, 31.04, 244.49°)
OKLab	oklab(68.3% -0.0618 -0.0782)
OKLCH	oklch(68.3% 0.1 231.7)
XYZ	xyz(27.5637, 32.6572, 61.9659)
Luminance	0.3266 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A4CC #CC7951

analogous

#51CCB6 #51A4CC #5166CC

triadic

#51A4CC #CC51A4 #A4CC51

tetradic

#51A4CC #B651CC #CC7951 #66CC51

square

#51A4CC #B651CC #CC7951 #66CC51

split-complementary

#51A4CC #CC5166 #CCB651

monochromatic

#25617E #3385AD #51A4CC #80BDDA #B0D6E8

Accessibility & contrast

On white

2.79

#51A4CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.53

#51A4CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A4CC

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A4CC	#FFFFFF	#000000	##000000
##51A4CC	1.00	2.79	7.53	7.53
#FFFFFF	2.79	1.00	21.00	21.00
#000000	7.53	21.00	1.00	1.00
##000000	7.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#90A2CE

Deuteranopia (green-blind)

#7F95CB

Tritanopia (blue-blind)

#00AFB1

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #51a4cc;
/* rgb */ color: rgb(81, 164, 204);
/* oklch */ color: oklch(68.3% 0.100 231.7);

Tailwind

colors: {
  custom: {
    50: '#8dbfdb',
    500: '#51a4cc',
    950: '#000000',
  },
}

SCSS

$custom: #51a4cc;
$custom-light: #8dbfdb;
$custom-dark: #000000;

JSON

{
  "hex": "#51a4cc",
  "rgb": {
    "r": 81,
    "g": 164,
    "b": 204
  },
  "hsl": {
    "h": 199.512,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.68298,
    "c": 0.09974,
    "h": 231.7
  },
  "luminance": 0.3266
}

Semantic roles & 50–950 ramp

primary

#51A4CC

secondary

#D6B3A3

accent

#7A4ADE

background

#F9FBFD

surface

#F1F7FB

border

#CBD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A4CC

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

Preview Lab → · Contrast checker → · Palette generator →