#51A1DA#51A1DA

#51A1DA is a light, moderate cyan. Relative luminance 0.323; OKLCH L 68.3% C 0.115 H 242.1°. Best body text is #000000 at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#51A1DA
RGB	rgb(81, 161, 218)
HSL	hsl(205, 65%, 59%)
HSV	hsv(205, 63%, 85%)
CMYK	cmyk(62.8%, 26.1%, 0%, 14.5%)
CIE-LAB	lab(63.59, -7.27, -36.24)
CIE-LCH	lch(63.59, 36.96, 258.66°)
OKLab	oklab(68.26% -0.0539 -0.1019)
OKLCH	oklch(68.26% 0.115 242.1)
XYZ	xyz(28.7883, 32.2982, 71.0331)
Luminance	0.3230 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A1DA #DA8A51

analogous

#51DACF #51A1DA #515CDA

triadic

#51A1DA #DA51A1 #A1DA51

tetradic

#51A1DA #CF51DA #DA8A51 #5CDA51

square

#51A1DA #CF51DA #DA8A51 #5CDA51

split-complementary

#51A1DA #DA515C #DACF51

monochromatic

#1F6292 #2A84C4 #51A1DA #83BCE5 #B6D8EF

Accessibility & contrast

On white

2.81

#51A1DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.46

#51A1DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A1DA

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A1DA	#FFFFFF	#000000	##000000
##51A1DA	1.00	2.81	7.46	7.46
#FFFFFF	2.81	1.00	21.00	21.00
#000000	7.46	21.00	1.00	1.00
##000000	7.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#87A2DD

Deuteranopia (green-blind)

#7594D9

Tritanopia (blue-blind)

#00AFB5

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #51a1da;
/* rgb */ color: rgb(81, 161, 218);
/* oklch */ color: oklch(68.3% 0.115 242.1);

Tailwind

colors: {
  custom: {
    50: '#8ebce5',
    500: '#51a1da',
    950: '#000000',
  },
}

SCSS

$custom: #51a1da;
$custom-light: #8ebce5;
$custom-dark: #000000;

JSON

{
  "hex": "#51a1da",
  "rgb": {
    "r": 81,
    "g": 161,
    "b": 218
  },
  "hsl": {
    "h": 204.964,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.68255,
    "c": 0.1153,
    "h": 242.1
  },
  "luminance": 0.32301
}

Semantic roles & 50–950 ramp

primary

#51A1DA

secondary

#DEBFA8

accent

#8640E8

background

#F9FBFE

surface

#F2F6FC

border

#CCD0D5

text

#0D1216

muted

#7E8184

Preview Lab

Preview with #51A1DA

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

Preview Lab → · Contrast checker → · Palette generator →