#51A4E7#51A4E7

#51A4E7 is a light, vivid cyan. Relative luminance 0.341; OKLCH L 69.6% C 0.128 H 245.5°. Best body text is #000000 at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#51A4E7
RGB	rgb(81, 164, 231)
HSL	hsl(207, 76%, 61%)
HSV	hsv(207, 65%, 91%)
CMYK	cmyk(64.9%, 29%, 0%, 9.4%)
CIE-LAB	lab(65.02, -4.71, -41.18)
CIE-LCH	lch(65.02, 41.45, 263.48°)
OKLab	oklab(69.57% -0.053 -0.1162)
OKLCH	oklch(69.57% 0.128 245.5)
XYZ	xyz(31.0872, 34.0666, 80.5230)
Luminance	0.3407 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A4E7 #E79451

analogous

#51E7DF #51A4E7 #5159E7

triadic

#51A4E7 #E751A4 #A4E751

tetradic

#51A4E7 #DF51E7 #E79451 #59E751

square

#51A4E7 #DF51E7 #E79451 #59E751

split-complementary

#51A4E7 #E75159 #E7DF51

monochromatic

#1766A7 #1E88DC #51A4E7 #87C0EE #BDDCF6

Accessibility & contrast

On white

2.69

#51A4E7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.81

#51A4E7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A4E7

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A4E7	#FFFFFF	#000000	##000000
##51A4E7	1.00	2.69	7.81	7.81
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.81	21.00	1.00	1.00
##000000	7.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#86A6EA

Deuteranopia (green-blind)

#7297E6

Tritanopia (blue-blind)

#00B4BB

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #51a4e7;
/* rgb */ color: rgb(81, 164, 231);
/* oklch */ color: oklch(69.6% 0.128 245.5);

Tailwind

colors: {
  custom: {
    50: '#90beef',
    500: '#51a4e7',
    950: '#000000',
  },
}

SCSS

$custom: #51a4e7;
$custom-light: #90beef;
$custom-dark: #000000;

JSON

{
  "hex": "#51a4e7",
  "rgb": {
    "r": 81,
    "g": 164,
    "b": 231
  },
  "hsl": {
    "h": 206.8,
    "s": 75.758,
    "l": 61.176
  },
  "oklch": {
    "l": 0.69569,
    "c": 0.12773,
    "h": 245.5
  },
  "luminance": 0.3407
}

Semantic roles & 50–950 ramp

primary

#51A4E7

secondary

#E6C7AE

accent

#680ED8

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A4E7

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

Preview Lab → · Contrast checker → · Palette generator →