#51A4DF#51A4DF

#51A4DF is a light, moderate cyan. Relative luminance 0.336; OKLCH L 69.2% C 0.119 H 242.2°. Best body text is #000000 at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#51A4DF
RGB	rgb(81, 164, 223)
HSL	hsl(205, 69%, 60%)
HSV	hsv(205, 64%, 87%)
CMYK	cmyk(63.7%, 26.5%, 0%, 12.5%)
CIE-LAB	lab(64.66, -7.32, -37.32)
CIE-LCH	lch(64.66, 38.04, 258.90°)
OKLab	oklab(69.18% -0.0554 -0.105)
OKLCH	oklch(69.18% 0.119 242.2)
XYZ	xyz(29.9830, 33.6249, 74.7079)
Luminance	0.3363 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A4DF #DF8C51

analogous

#51DFD3 #51A4DF #515DDF

triadic

#51A4DF #DF51A4 #A4DF51

tetradic

#51A4DF #D351DF #DF8C51 #5DDF51

square

#51A4DF #D351DF #DF8C51 #5DDF51

split-complementary

#51A4DF #DF515D #DFD351

monochromatic

#1C6599 #2688CD #51A4DF #85BFE9 #B8DAF2

Accessibility & contrast

On white

2.72

#51A4DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.73

#51A4DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A4DF

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A4DF	#FFFFFF	#000000	##000000
##51A4DF	1.00	2.72	7.73	7.73
#FFFFFF	2.72	1.00	21.00	21.00
#000000	7.73	21.00	1.00	1.00
##000000	7.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#89A5E2

Deuteranopia (green-blind)

#7697DE

Tritanopia (blue-blind)

#00B3B8

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51a4df;
/* rgb */ color: rgb(81, 164, 223);
/* oklch */ color: oklch(69.2% 0.119 242.2);

Tailwind

colors: {
  custom: {
    50: '#8fbee9',
    500: '#51a4df',
    950: '#000000',
  },
}

SCSS

$custom: #51a4df;
$custom-light: #8fbee9;
$custom-dark: #000000;

JSON

{
  "hex": "#51a4df",
  "rgb": {
    "r": 81,
    "g": 164,
    "b": 223
  },
  "hsl": {
    "h": 204.93,
    "s": 68.932,
    "l": 59.608
  },
  "oklch": {
    "l": 0.69176,
    "c": 0.11877,
    "h": 242.2
  },
  "luminance": 0.33628
}

Semantic roles & 50–950 ramp

primary

#51A4DF

secondary

#E1C1AA

accent

#853CEC

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A4DF

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

Preview Lab → · Contrast checker → · Palette generator →