#51A4CB#51A4CB

#51A4CB is a light, moderate cyan. Relative luminance 0.326; OKLCH L 68.3% C 0.099 H 231.0°. Best body text is #000000 at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#51A4CB
RGB	rgb(81, 164, 203)
HSL	hsl(199, 54%, 56%)
HSV	hsv(199, 60%, 80%)
CMYK	cmyk(60.1%, 19.2%, 0%, 20.4%)
CIE-LAB	lab(63.84, -13.68, -27.52)
CIE-LCH	lch(63.84, 30.73, 243.57°)
OKLab	oklab(68.25% -0.0622 -0.0768)
OKLCH	oklch(68.25% 0.099 231)
XYZ	xyz(27.4441, 32.6094, 61.3363)
Luminance	0.3261 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A4CB #CB7851

analogous

#51CBB5 #51A4CB #5167CB

triadic

#51A4CB #CB51A4 #A4CB51

tetradic

#51A4CB #B551CB #CB7851 #67CB51

square

#51A4CB #B551CB #CB7851 #67CB51

split-complementary

#51A4CB #CB5167 #CBB551

monochromatic

#25617C #3385AC #51A4CB #80BDD9 #AFD5E7

Accessibility & contrast

On white

2.79

#51A4CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.52

#51A4CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A4CB

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A4CB	#FFFFFF	#000000	##000000
##51A4CB	1.00	2.79	7.52	7.52
#FFFFFF	2.79	1.00	21.00	21.00
#000000	7.52	21.00	1.00	1.00
##000000	7.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#90A2CD

Deuteranopia (green-blind)

#7F95CA

Tritanopia (blue-blind)

#00AFB1

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #51a4cb;
/* rgb */ color: rgb(81, 164, 203);
/* oklch */ color: oklch(68.3% 0.099 231.0);

Tailwind

colors: {
  custom: {
    50: '#8cbfdb',
    500: '#51a4cb',
    950: '#000000',
  },
}

SCSS

$custom: #51a4cb;
$custom-light: #8cbfdb;
$custom-dark: #000000;

JSON

{
  "hex": "#51a4cb",
  "rgb": {
    "r": 81,
    "g": 164,
    "b": 203
  },
  "hsl": {
    "h": 199.18,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.68254,
    "c": 0.09887,
    "h": 231
  },
  "luminance": 0.32612
}

Semantic roles & 50–950 ramp

primary

#51A4CB

secondary

#D5B3A3

accent

#794ADD

background

#F9FBFD

surface

#F1F7FA

border

#CBD0D3

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A4CB

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

Preview Lab → · Contrast checker → · Palette generator →