#51A6CB#51A6CB

#51A6CB is a light, moderate cyan. Relative luminance 0.333; OKLCH L 68.7% C 0.098 H 229.1°. Best body text is #000000 at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#51A6CB
RGB	rgb(81, 166, 203)
HSL	hsl(198, 54%, 56%)
HSV	hsv(198, 60%, 80%)
CMYK	cmyk(60.1%, 18.2%, 0%, 20.4%)
CIE-LAB	lab(64.43, -14.75, -26.62)
CIE-LCH	lch(64.43, 30.43, 241.00°)
OKLab	oklab(68.72% -0.0644 -0.0743)
OKLCH	oklch(68.72% 0.098 229.1)
XYZ	xyz(27.8049, 33.3308, 61.4565)
Luminance	0.3333 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A6CB #CB7651

analogous

#51CBB3 #51A6CB #5169CB

triadic

#51A6CB #CB51A6 #A6CB51

tetradic

#51A6CB #B351CB #CB7651 #69CB51

square

#51A6CB #B351CB #CB7651 #69CB51

split-complementary

#51A6CB #CB5169 #CBB351

monochromatic

#25627C #3387AC #51A6CB #80BED9 #AFD6E7

Accessibility & contrast

On white

2.74

#51A6CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.67

#51A6CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A6CB

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A6CB	#FFFFFF	#000000	##000000
##51A6CB	1.00	2.74	7.67	7.67
#FFFFFF	2.74	1.00	21.00	21.00
#000000	7.67	21.00	1.00	1.00
##000000	7.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93A3CD

Deuteranopia (green-blind)

#8297CB

Tritanopia (blue-blind)

#00B0B2

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51a6cb;
/* rgb */ color: rgb(81, 166, 203);
/* oklch */ color: oklch(68.7% 0.098 229.1);

Tailwind

colors: {
  custom: {
    50: '#8dc0db',
    500: '#51a6cb',
    950: '#000000',
  },
}

SCSS

$custom: #51a6cb;
$custom-light: #8dc0db;
$custom-dark: #000000;

JSON

{
  "hex": "#51a6cb",
  "rgb": {
    "r": 81,
    "g": 166,
    "b": 203
  },
  "hsl": {
    "h": 198.197,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.6872,
    "c": 0.09828,
    "h": 229.1
  },
  "luminance": 0.33334
}

Semantic roles & 50–950 ramp

primary

#51A6CB

secondary

#D5B2A3

accent

#774ADD

background

#F9FBFD

surface

#F1F7FA

border

#CBD0D3

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A6CB

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

Preview Lab → · Contrast checker → · Palette generator →