#51A5BC#51A5BC

#51A5BC is a light, moderate cyan. Relative luminance 0.323; OKLCH L 67.9% C 0.088 H 218.2°. Best body text is #000000 at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#51A5BC
RGB	rgb(81, 165, 188)
HSL	hsl(193, 44%, 53%)
HSV	hsv(193, 57%, 74%)
CMYK	cmyk(56.9%, 12.2%, 0%, 26.3%)
CIE-LAB	lab(63.58, -18.77, -19.56)
CIE-LCH	lch(63.58, 27.11, 226.18°)
OKLab	oklab(67.86% -0.069 -0.0542)
OKLCH	oklch(67.86% 0.088 218.2)
XYZ	xyz(25.9220, 32.2880, 52.4333)
Luminance	0.3229 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A5BC #BC6851

analogous

#51BC9D #51A5BC #5170BC

triadic

#51A5BC #BC51A5 #A5BC51

tetradic

#51A5BC #9D51BC #BC6851 #70BC51

square

#51A5BC #9D51BC #BC6851 #70BC51

split-complementary

#51A5BC #BC5170 #BC9D51

monochromatic

#295C6A #3A8296 #51A5BC #7DBCCD #A9D3DE

Accessibility & contrast

On white

2.82

#51A5BC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.46

#51A5BC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A5BC

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A5BC	#FFFFFF	#000000	##000000
##51A5BC	1.00	2.82	7.46	7.46
#FFFFFF	2.82	1.00	21.00	21.00
#000000	7.46	21.00	1.00	1.00
##000000	7.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#96A1BD

Deuteranopia (green-blind)

#8695BC

Tritanopia (blue-blind)

#00ADAC

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #51a5bc;
/* rgb */ color: rgb(81, 165, 188);
/* oklch */ color: oklch(67.9% 0.088 218.2);

Tailwind

colors: {
  custom: {
    50: '#8bbfd0',
    500: '#51a5bc',
    950: '#000000',
  },
}

SCSS

$custom: #51a5bc;
$custom-light: #8bbfd0;
$custom-dark: #000000;

JSON

{
  "hex": "#51a5bc",
  "rgb": {
    "r": 81,
    "g": 165,
    "b": 188
  },
  "hsl": {
    "h": 192.897,
    "s": 44.398,
    "l": 52.745
  },
  "oklch": {
    "l": 0.67859,
    "c": 0.08775,
    "h": 218.2
  },
  "luminance": 0.3229
}

Semantic roles & 50–950 ramp

primary

#51A5BC

secondary

#CCA79D

accent

#6F54D4

background

#F9FBFC

surface

#F1F7F9

border

#CBD0D2

text

#0D1214

muted

#7E8182

Preview Lab

Preview with #51A5BC

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

Preview Lab → · Contrast checker → · Palette generator →