#51A1EC#51A1EC

#51A1EC is a light, vivid cyan. Relative luminance 0.333; OKLCH L 69.2% C 0.136 H 249.1°. Best body text is #000000 at 7.66:1 contrast (WCAG AA passes).

Color values

HEX	#51A1EC
RGB	rgb(81, 161, 236)
HSL	hsl(209, 80%, 62%)
HSV	hsv(209, 66%, 93%)
CMYK	cmyk(65.7%, 31.8%, 0%, 7.5%)
CIE-LAB	lab(64.40, -1.36, -44.90)
CIE-LCH	lch(64.40, 44.92, 268.27°)
OKLab	oklab(69.16% -0.0486 -0.1271)
OKLCH	oklch(69.16% 0.136 249.1)
XYZ	xyz(31.2729, 33.2920, 84.1185)
Luminance	0.3330 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A1EC #EC9C51

analogous

#51ECE9 #51A1EC #5154EC

triadic

#51A1EC #EC51A1 #A1EC51

tetradic

#51A1EC #E951EC #EC9C51 #54EC51

square

#51A1EC #E951EC #EC9C51 #54EC51

split-complementary

#51A1EC #EC5154 #ECE951

monochromatic

#1364AF #1A83E6 #51A1EC #88BFF2 #BFDDF8

Accessibility & contrast

On white

2.74

#51A1EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.66

#51A1EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A1EC

7.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A1EC	#FFFFFF	#000000	##000000
##51A1EC	1.00	2.74	7.66	7.66
#FFFFFF	2.74	1.00	21.00	21.00
#000000	7.66	21.00	1.00	1.00
##000000	7.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#80A4EF

Deuteranopia (green-blind)

#6B95EB

Tritanopia (blue-blind)

#00B3BC

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51a1ec;
/* rgb */ color: rgb(81, 161, 236);
/* oklch */ color: oklch(69.2% 0.136 249.1);

Tailwind

colors: {
  custom: {
    50: '#91bcf2',
    500: '#51a1ec',
    950: '#000000',
  },
}

SCSS

$custom: #51a1ec;
$custom-light: #91bcf2;
$custom-dark: #000000;

JSON

{
  "hex": "#51a1ec",
  "rgb": {
    "r": 81,
    "g": 161,
    "b": 236
  },
  "hsl": {
    "h": 209.032,
    "s": 80.311,
    "l": 62.157
  },
  "oklch": {
    "l": 0.69157,
    "c": 0.13602,
    "h": 249.1
  },
  "luminance": 0.33295
}

Semantic roles & 50–950 ramp

primary

#51A1EC

secondary

#E9CBB0

accent

#6F09DD

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1217

muted

#7E8185

Preview Lab

Preview with #51A1EC

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

Preview Lab → · Contrast checker → · Palette generator →