#51A9DA#51A9DA

#51A9DA is a light, moderate cyan. Relative luminance 0.352; OKLCH L 70.1% C 0.111 H 235.8°. Best body text is #000000 at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#51A9DA
RGB	rgb(81, 169, 218)
HSL	hsl(201, 65%, 59%)
HSV	hsv(201, 63%, 85%)
CMYK	cmyk(62.8%, 22.5%, 0%, 14.5%)
CIE-LAB	lab(65.89, -11.68, -32.66)
CIE-LCH	lch(65.89, 34.68, 250.32°)
OKLab	oklab(70.08% -0.0623 -0.0916)
OKLCH	oklch(70.08% 0.111 235.8)
XYZ	xyz(30.2313, 35.1842, 71.5141)
Luminance	0.3519 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A9DA #DA8251

analogous

#51DAC6 #51A9DA #5164DA

triadic

#51A9DA #DA51A9 #A9DA51

tetradic

#51A9DA #C651DA #DA8251 #64DA51

square

#51A9DA #C651DA #DA8251 #64DA51

split-complementary

#51A9DA #DA5164 #DAC651

monochromatic

#1F6992 #2A8DC4 #51A9DA #83C2E5 #B6DBEF

Accessibility & contrast

On white

2.61

#51A9DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.04

#51A9DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A9DA

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A9DA	#FFFFFF	#000000	##000000
##51A9DA	1.00	2.61	8.04	8.04
#FFFFFF	2.61	1.00	21.00	21.00
#000000	8.04	21.00	1.00	1.00
##000000	8.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92A8DC

Deuteranopia (green-blind)

#7F9AD9

Tritanopia (blue-blind)

#00B6B9

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #51a9da;
/* rgb */ color: rgb(81, 169, 218);
/* oklch */ color: oklch(70.1% 0.111 235.8);

Tailwind

colors: {
  custom: {
    50: '#8ec2e5',
    500: '#51a9da',
    950: '#000000',
  },
}

SCSS

$custom: #51a9da;
$custom-light: #8ec2e5;
$custom-dark: #000000;

JSON

{
  "hex": "#51a9da",
  "rgb": {
    "r": 81,
    "g": 169,
    "b": 218
  },
  "hsl": {
    "h": 201.46,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.7008,
    "c": 0.11071,
    "h": 235.8
  },
  "luminance": 0.35187
}

Semantic roles & 50–950 ramp

primary

#51A9DA

secondary

#DEBCA8

accent

#7C40E8

background

#F9FBFE

surface

#F2F7FC

border

#CCD0D5

text

#0D1215

muted

#7E8184

Preview Lab

Preview with #51A9DA

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

Preview Lab → · Contrast checker → · Palette generator →