#51A7CC#51A7CC

#51A7CC is a light, moderate cyan. Relative luminance 0.337; OKLCH L 69.0% C 0.099 H 228.8°. Best body text is #000000 at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#51A7CC
RGB	rgb(81, 167, 204)
HSL	hsl(198, 55%, 56%)
HSV	hsv(198, 60%, 80%)
CMYK	cmyk(60.3%, 18.1%, 0%, 20%)
CIE-LAB	lab(64.76, -14.98, -26.66)
CIE-LCH	lch(64.76, 30.58, 240.67°)
OKLab	oklab(69% -0.0651 -0.0744)
OKLCH	oklch(69% 0.099 228.8)
XYZ	xyz(28.1069, 33.7436, 62.1470)
Luminance	0.3375 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A7CC #CC7651

analogous

#51CCB4 #51A7CC #5169CC

triadic

#51A7CC #CC51A7 #A7CC51

tetradic

#51A7CC #B451CC #CC7651 #69CC51

square

#51A7CC #B451CC #CC7651 #69CC51

split-complementary

#51A7CC #CC5169 #CCB451

monochromatic

#25637E #3388AD #51A7CC #80BFDA #B0D7E8

Accessibility & contrast

On white

2.71

#51A7CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.75

#51A7CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A7CC

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A7CC	#FFFFFF	#000000	##000000
##51A7CC	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)

#94A4CE

Deuteranopia (green-blind)

#8397CC

Tritanopia (blue-blind)

#00B1B3

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51a7cc;
/* rgb */ color: rgb(81, 167, 204);
/* oklch */ color: oklch(69.0% 0.099 228.8);

Tailwind

colors: {
  custom: {
    50: '#8dc1db',
    500: '#51a7cc',
    950: '#000000',
  },
}

SCSS

$custom: #51a7cc;
$custom-light: #8dc1db;
$custom-dark: #000000;

JSON

{
  "hex": "#51a7cc",
  "rgb": {
    "r": 81,
    "g": 167,
    "b": 204
  },
  "hsl": {
    "h": 198.049,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.68996,
    "c": 0.09884,
    "h": 228.8
  },
  "luminance": 0.33746
}

Semantic roles & 50–950 ramp

primary

#51A7CC

secondary

#D6B2A3

accent

#764ADE

background

#F9FBFD

surface

#F1F7FB

border

#CBD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A7CC

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

Preview Lab → · Contrast checker → · Palette generator →