#51A4E1#51A4E1

#51A4E1 is a light, vivid cyan. Relative luminance 0.337; OKLCH L 69.3% C 0.121 H 243.1°. Best body text is #000000 at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#51A4E1
RGB	rgb(81, 164, 225)
HSL	hsl(205, 71%, 60%)
HSV	hsv(205, 64%, 88%)
CMYK	cmyk(64%, 27.1%, 0%, 11.8%)
CIE-LAB	lab(64.75, -6.67, -38.29)
CIE-LCH	lch(64.75, 38.87, 260.12°)
OKLab	oklab(69.27% -0.0548 -0.1078)
OKLCH	oklch(69.27% 0.121 243.1)
XYZ	xyz(30.2543, 33.7334, 76.1363)
Luminance	0.3374 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A4E1 #E18E51

analogous

#51E1D6 #51A4E1 #515CE1

triadic

#51A4E1 #E151A4 #A4E151

tetradic

#51A4E1 #D651E1 #E18E51 #5CE151

square

#51A4E1 #D651E1 #E18E51 #5CE151

split-complementary

#51A4E1 #E1515C #E1D651

monochromatic

#1B669D #2488D1 #51A4E1 #85BFEA #B9DBF3

Accessibility & contrast

On white

2.71

#51A4E1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.75

#51A4E1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A4E1

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A4E1	#FFFFFF	#000000	##000000
##51A4E1	1.00	2.71	7.75	7.75
#FFFFFF	2.71	1.00	21.00	21.00
#000000	7.75	21.00	1.00	1.00
##000000	7.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#89A5E4

Deuteranopia (green-blind)

#7597E0

Tritanopia (blue-blind)

#00B3B9

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51a4e1;
/* rgb */ color: rgb(81, 164, 225);
/* oklch */ color: oklch(69.3% 0.121 243.1);

Tailwind

colors: {
  custom: {
    50: '#8fbeea',
    500: '#51a4e1',
    950: '#000000',
  },
}

SCSS

$custom: #51a4e1;
$custom-light: #8fbeea;
$custom-dark: #000000;

JSON

{
  "hex": "#51a4e1",
  "rgb": {
    "r": 81,
    "g": 164,
    "b": 225
  },
  "hsl": {
    "h": 205.417,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.69273,
    "c": 0.12097,
    "h": 243.1
  },
  "luminance": 0.33736
}

Semantic roles & 50–950 ramp

primary

#51A4E1

secondary

#E3C3AB

accent

#863AED

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A4E1

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

Preview Lab → · Contrast checker → · Palette generator →