#51A1CB#51A1CB

#51A1CB is a light, moderate cyan. Relative luminance 0.316; OKLCH L 67.6% C 0.100 H 233.9°. Best body text is #000000 at 7.31:1 contrast (WCAG AA passes).

Color values

HEX	#51A1CB
RGB	rgb(81, 161, 203)
HSL	hsl(201, 54%, 56%)
HSV	hsv(201, 60%, 80%)
CMYK	cmyk(60.1%, 20.7%, 0%, 20.4%)
CIE-LAB	lab(62.97, -12.05, -28.87)
CIE-LCH	lch(62.97, 31.28, 247.35°)
OKLab	oklab(67.56% -0.059 -0.0807)
OKLCH	oklch(67.56% 0.1 233.9)
XYZ	xyz(26.9136, 31.5483, 61.1594)
Luminance	0.3155 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A1CB #CB7B51

analogous

#51CBB8 #51A1CB #5164CB

triadic

#51A1CB #CB51A1 #A1CB51

tetradic

#51A1CB #B851CB #CB7B51 #64CB51

square

#51A1CB #B851CB #CB7B51 #64CB51

split-complementary

#51A1CB #CB5164 #CBB851

monochromatic

#255E7C #3382AC #51A1CB #80BAD9 #AFD4E7

Accessibility & contrast

On white

2.87

#51A1CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.31

#51A1CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A1CB

7.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A1CB	#FFFFFF	#000000	##000000
##51A1CB	1.00	2.87	7.31	7.31
#FFFFFF	2.87	1.00	21.00	21.00
#000000	7.31	21.00	1.00	1.00
##000000	7.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8D9FCD

Deuteranopia (green-blind)

#7C93CA

Tritanopia (blue-blind)

#00ACAF

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #51a1cb;
/* rgb */ color: rgb(81, 161, 203);
/* oklch */ color: oklch(67.6% 0.100 233.9);

Tailwind

colors: {
  custom: {
    50: '#8cbcdb',
    500: '#51a1cb',
    950: '#000000',
  },
}

SCSS

$custom: #51a1cb;
$custom-light: #8cbcdb;
$custom-dark: #000000;

JSON

{
  "hex": "#51a1cb",
  "rgb": {
    "r": 81,
    "g": 161,
    "b": 203
  },
  "hsl": {
    "h": 200.656,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.67557,
    "c": 0.09995,
    "h": 233.9
  },
  "luminance": 0.31551
}

Semantic roles & 50–950 ramp

primary

#51A1CB

secondary

#D5B4A3

accent

#7D4ADD

background

#F9FBFD

surface

#F1F6FB

border

#CBD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A1CB

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

Preview Lab → · Contrast checker → · Palette generator →