#51A4E0#51A4E0

#51A4E0 is a light, moderate cyan. Relative luminance 0.337; OKLCH L 69.2% C 0.120 H 242.6°. Best body text is #000000 at 7.74:1 contrast (WCAG AA passes).

Color values

HEX	#51A4E0
RGB	rgb(81, 164, 224)
HSL	hsl(205, 70%, 60%)
HSV	hsv(205, 64%, 88%)
CMYK	cmyk(63.8%, 26.8%, 0%, 12.2%)
CIE-LAB	lab(64.71, -7.00, -37.81)
CIE-LCH	lch(64.71, 38.45, 259.52°)
OKLab	oklab(69.22% -0.0551 -0.1064)
OKLCH	oklch(69.22% 0.12 242.6)
XYZ	xyz(30.1183, 33.6790, 75.4200)
Luminance	0.3368 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A4E0 #E08D51

analogous

#51E0D5 #51A4E0 #515CE0

triadic

#51A4E0 #E051A4 #A4E051

tetradic

#51A4E0 #D551E0 #E08D51 #5CE051

square

#51A4E0 #D551E0 #E08D51 #5CE051

split-complementary

#51A4E0 #E0515C #E0D551

monochromatic

#1C669B #2588CF #51A4E0 #85BFE9 #B9DAF3

Accessibility & contrast

On white

2.71

#51A4E0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.74

#51A4E0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A4E0

7.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A4E0	#FFFFFF	#000000	##000000
##51A4E0	1.00	2.71	7.74	7.74
#FFFFFF	2.71	1.00	21.00	21.00
#000000	7.74	21.00	1.00	1.00
##000000	7.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#89A5E3

Deuteranopia (green-blind)

#7697DF

Tritanopia (blue-blind)

#00B3B9

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51a4e0;
/* rgb */ color: rgb(81, 164, 224);
/* oklch */ color: oklch(69.2% 0.120 242.6);

Tailwind

colors: {
  custom: {
    50: '#8fbeea',
    500: '#51a4e0',
    950: '#000000',
  },
}

SCSS

$custom: #51a4e0;
$custom-light: #8fbeea;
$custom-dark: #000000;

JSON

{
  "hex": "#51a4e0",
  "rgb": {
    "r": 81,
    "g": 164,
    "b": 224
  },
  "hsl": {
    "h": 205.175,
    "s": 69.756,
    "l": 59.804
  },
  "oklch": {
    "l": 0.69224,
    "c": 0.11987,
    "h": 242.6
  },
  "luminance": 0.33682
}

Semantic roles & 50–950 ramp

primary

#51A4E0

secondary

#E2C2AB

accent

#863BED

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A4E0

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

Preview Lab → · Contrast checker → · Palette generator →