#51ACEA#51ACEA

#51ACEA is a light, vivid cyan. Relative luminance 0.372; OKLCH L 71.5% C 0.125 H 241.4°. Best body text is #000000 at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#51ACEA
RGB	rgb(81, 172, 234)
HSL	hsl(204, 78%, 62%)
HSV	hsv(204, 65%, 92%)
CMYK	cmyk(65.4%, 26.5%, 0%, 8.2%)
CIE-LAB	lab(67.42, -8.18, -39.07)
CIE-LCH	lch(67.42, 39.91, 258.17°)
OKLab	oklab(71.51% -0.0601 -0.11)
OKLCH	oklch(71.51% 0.125 241.4)
XYZ	xyz(32.9915, 37.1915, 83.2659)
Luminance	0.3720 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51ACEA #EA8F51

analogous

#51EADC #51ACEA #5160EA

triadic

#51ACEA #EA51AC #ACEA51

tetradic

#51ACEA #DC51EA #EA8F51 #60EA51

square

#51ACEA #DC51EA #EA8F51 #60EA51

split-complementary

#51ACEA #EA5160 #EADC51

monochromatic

#156FAC #1B92E2 #51ACEA #88C6F1 #BEE0F7

Accessibility & contrast

On white

2.49

#51ACEA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.44

#51ACEA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51ACEA

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51ACEA	#FFFFFF	#000000	##000000
##51ACEA	1.00	2.49	8.44	8.44
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.44	21.00	1.00	1.00
##000000	8.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#90ADED

Deuteranopia (green-blind)

#7B9DE9

Tritanopia (blue-blind)

#00BBC1

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #51acea;
/* rgb */ color: rgb(81, 172, 234);
/* oklch */ color: oklch(71.5% 0.125 241.4);

Tailwind

colors: {
  custom: {
    50: '#91c4f1',
    500: '#51acea',
    950: '#000000',
  },
}

SCSS

$custom: #51acea;
$custom-light: #91c4f1;
$custom-dark: #000000;

JSON

{
  "hex": "#51acea",
  "rgb": {
    "r": 81,
    "g": 172,
    "b": 234
  },
  "hsl": {
    "h": 204.314,
    "s": 78.462,
    "l": 61.765
  },
  "oklch": {
    "l": 0.71513,
    "c": 0.12536,
    "h": 241.4
  },
  "luminance": 0.37195
}

Semantic roles & 50–950 ramp

primary

#51ACEA

secondary

#E8C6AF

accent

#5F0BDB

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51ACEA

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

Preview Lab → · Contrast checker → · Palette generator →