#51A6DA#51A6DA

#51A6DA is a light, moderate cyan. Relative luminance 0.341; OKLCH L 69.4% C 0.112 H 238.2°. Best body text is #000000 at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#51A6DA
RGB	rgb(81, 166, 218)
HSL	hsl(203, 65%, 59%)
HSV	hsv(203, 63%, 85%)
CMYK	cmyk(62.8%, 23.9%, 0%, 14.5%)
CIE-LAB	lab(65.03, -10.04, -34.00)
CIE-LCH	lch(65.03, 35.45, 253.55°)
OKLab	oklab(69.39% -0.0591 -0.0954)
OKLCH	oklch(69.39% 0.112 238.2)
XYZ	xyz(29.6796, 34.0807, 71.3302)
Luminance	0.3408 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A6DA #DA8551

analogous

#51DACA #51A6DA #5161DA

triadic

#51A6DA #DA51A6 #A6DA51

tetradic

#51A6DA #CA51DA #DA8551 #61DA51

square

#51A6DA #CA51DA #DA8551 #61DA51

split-complementary

#51A6DA #DA5161 #DACA51

monochromatic

#1F6692 #2A89C4 #51A6DA #83C0E5 #B6DAEF

Accessibility & contrast

On white

2.69

#51A6DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.82

#51A6DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A6DA

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A6DA	#FFFFFF	#000000	##000000
##51A6DA	1.00	2.69	7.82	7.82
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.82	21.00	1.00	1.00
##000000	7.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EA6DC

Deuteranopia (green-blind)

#7B98D9

Tritanopia (blue-blind)

#00B3B8

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #51a6da;
/* rgb */ color: rgb(81, 166, 218);
/* oklch */ color: oklch(69.4% 0.112 238.2);

Tailwind

colors: {
  custom: {
    50: '#8ec0e5',
    500: '#51a6da',
    950: '#000000',
  },
}

SCSS

$custom: #51a6da;
$custom-light: #8ec0e5;
$custom-dark: #000000;

JSON

{
  "hex": "#51a6da",
  "rgb": {
    "r": 81,
    "g": 166,
    "b": 218
  },
  "hsl": {
    "h": 202.774,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.69394,
    "c": 0.11226,
    "h": 238.2
  },
  "luminance": 0.34084
}

Semantic roles & 50–950 ramp

primary

#51A6DA

secondary

#DEBDA8

accent

#8040E8

background

#F9FBFE

surface

#F2F7FC

border

#CCD0D5

text

#0D1215

muted

#7E8184

Preview Lab

Preview with #51A6DA

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

Preview Lab → · Contrast checker → · Palette generator →