#51B6F2#51B6F2

#51B6F2 is a light, vivid cyan. Relative luminance 0.416; OKLCH L 74.1% C 0.128 H 238.1°. Best body text is #000000 at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#51B6F2
RGB	rgb(81, 182, 242)
HSL	hsl(202, 86%, 63%)
HSV	hsv(202, 67%, 95%)
CMYK	cmyk(66.5%, 24.8%, 0%, 5.1%)
CIE-LAB	lab(70.60, -11.05, -38.46)
CIE-LCH	lch(70.60, 40.02, 253.97°)
OKLab	oklab(74.15% -0.0674 -0.1082)
OKLCH	oklch(74.15% 0.128 238.1)
XYZ	xyz(36.1421, 41.6122, 90.1144)
Luminance	0.4162 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B6F2 #F28D51

analogous

#51F2DD #51B6F2 #5165F2

triadic

#51B6F2 #F251B6 #B6F251

tetradic

#51B6F2 #DD51F2 #F28D51 #65F251

square

#51B6F2 #DD51F2 #F28D51 #65F251

split-complementary

#51B6F2 #F25165 #F2DD51

monochromatic

#0E7ABB #189EEE #51B6F2 #8ACEF6 #C3E6FB

Accessibility & contrast

On white

2.25

#51B6F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.32

#51B6F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B6F2

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B6F2	#FFFFFF	#000000	##000000
##51B6F2	1.00	2.25	9.32	9.32
#FFFFFF	2.25	1.00	21.00	21.00
#000000	9.32	21.00	1.00	1.00
##000000	9.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB6F5

Deuteranopia (green-blind)

#84A6F1

Tritanopia (blue-blind)

#00C5CA

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #51b6f2;
/* rgb */ color: rgb(81, 182, 242);
/* oklch */ color: oklch(74.1% 0.128 238.1);

Tailwind

colors: {
  custom: {
    50: '#92cbf6',
    500: '#51b6f2',
    950: '#000000',
  },
}

SCSS

$custom: #51b6f2;
$custom-light: #92cbf6;
$custom-dark: #000000;

JSON

{
  "hex": "#51b6f2",
  "rgb": {
    "r": 81,
    "g": 182,
    "b": 242
  },
  "hsl": {
    "h": 202.36,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.74147,
    "c": 0.1275,
    "h": 238.1
  },
  "luminance": 0.41616
}

Semantic roles & 50–950 ramp

primary

#51B6F2

secondary

#ECC8B3

accent

#5603E3

background

#F9FCFF

surface

#F2F8FE

border

#CCD1D6

text

#0E1317

muted

#7E8285

Preview Lab

Preview with #51B6F2

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

Preview Lab → · Contrast checker → · Palette generator →