#51BCE6#51BCE6

#51BCE6 is a light, moderate cyan. Relative luminance 0.434; OKLCH L 75.0% C 0.114 H 227.3°. Best body text is #000000 at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#51BCE6
RGB	rgb(81, 188, 230)
HSL	hsl(197, 75%, 61%)
HSV	hsv(197, 65%, 90%)
CMYK	cmyk(64.8%, 18.3%, 0%, 9.8%)
CIE-LAB	lab(71.84, -18.03, -30.03)
CIE-LCH	lch(71.84, 35.03, 239.01°)
OKLab	oklab(74.98% -0.0775 -0.0839)
OKLCH	oklch(74.98% 0.114 227.3)
XYZ	xyz(35.6538, 43.4252, 81.3505)
Luminance	0.4343 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BCE6 #E67B51

analogous

#51E6C5 #51BCE6 #5171E6

triadic

#51BCE6 #E651BC #BCE651

tetradic

#51BCE6 #C551E6 #E67B51 #71E651

square

#51BCE6 #C551E6 #E67B51 #71E651

split-complementary

#51BCE6 #E65171 #E6C551

monochromatic

#187DA5 #1FA6DA #51BCE6 #87D1EE #BCE5F5

Accessibility & contrast

On white

2.17

#51BCE6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.69

#51BCE6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BCE6

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BCE6	#FFFFFF	#000000	##000000
##51BCE6	1.00	2.17	9.69	9.69
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.69	21.00	1.00	1.00
##000000	9.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6B9E8

Deuteranopia (green-blind)

#91A9E5

Tritanopia (blue-blind)

#00C8CA

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #51bce6;
/* rgb */ color: rgb(81, 188, 230);
/* oklch */ color: oklch(75.0% 0.114 227.3);

Tailwind

colors: {
  custom: {
    50: '#91d0ee',
    500: '#51bce6',
    950: '#000000',
  },
}

SCSS

$custom: #51bce6;
$custom-light: #91d0ee;
$custom-dark: #000000;

JSON

{
  "hex": "#51bce6",
  "rgb": {
    "r": 81,
    "g": 188,
    "b": 230
  },
  "hsl": {
    "h": 196.913,
    "s": 74.874,
    "l": 60.98
  },
  "oklch": {
    "l": 0.74976,
    "c": 0.11427,
    "h": 227.3
  },
  "luminance": 0.43429
}

Semantic roles & 50–950 ramp

primary

#51BCE6

secondary

#E5BDAD

accent

#470ED7

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BCE6

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

Preview Lab → · Contrast checker → · Palette generator →