#51A0DB#51A0DB

#51A0DB is a light, moderate cyan. Relative luminance 0.320; OKLCH L 68.1% C 0.117 H 243.3°. Best body text is #000000 at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#51A0DB
RGB	rgb(81, 160, 219)
HSL	hsl(206, 66%, 59%)
HSV	hsv(206, 63%, 86%)
CMYK	cmyk(63%, 26.9%, 0%, 14.1%)
CIE-LAB	lab(63.34, -6.38, -37.17)
CIE-LCH	lch(63.34, 37.72, 260.25°)
OKLab	oklab(68.08% -0.0526 -0.1046)
OKLCH	oklch(68.08% 0.117 243.3)
XYZ	xyz(28.7455, 32.0026, 71.6663)
Luminance	0.3201 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A0DB #DB8C51

analogous

#51DBD1 #51A0DB #515BDB

triadic

#51A0DB #DB51A0 #A0DB51

tetradic

#51A0DB #D151DB #DB8C51 #5BDB51

square

#51A0DB #D151DB #DB8C51 #5BDB51

split-complementary

#51A0DB #DB515B #DBD151

monochromatic

#1E6193 #2983C6 #51A0DB #84BCE5 #B6D7F0

Accessibility & contrast

On white

2.84

#51A0DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.40

#51A0DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A0DB

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A0DB	#FFFFFF	#000000	##000000
##51A0DB	1.00	2.84	7.40	7.40
#FFFFFF	2.84	1.00	21.00	21.00
#000000	7.40	21.00	1.00	1.00
##000000	7.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#86A1DE

Deuteranopia (green-blind)

#7393DA

Tritanopia (blue-blind)

#00AEB4

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #51a0db;
/* rgb */ color: rgb(81, 160, 219);
/* oklch */ color: oklch(68.1% 0.117 243.3);

Tailwind

colors: {
  custom: {
    50: '#8ebbe6',
    500: '#51a0db',
    950: '#000000',
  },
}

SCSS

$custom: #51a0db;
$custom-light: #8ebbe6;
$custom-dark: #000000;

JSON

{
  "hex": "#51a0db",
  "rgb": {
    "r": 81,
    "g": 160,
    "b": 219
  },
  "hsl": {
    "h": 205.652,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.68076,
    "c": 0.11709,
    "h": 243.3
  },
  "luminance": 0.32005
}

Semantic roles & 50–950 ramp

primary

#51A0DB

secondary

#DFC0A9

accent

#883FE9

background

#F9FBFE

surface

#F2F6FC

border

#CCD0D5

text

#0D1116

muted

#7E8084

Preview Lab

Preview with #51A0DB

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

Preview Lab → · Contrast checker → · Palette generator →