#5188FE#5188FE

#5188FE is a light, vivid blue. Relative luminance 0.265; OKLCH L 64.9% C 0.185 H 263.4°. Best body text is #000000 at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#5188FE
RGB	rgb(81, 136, 254)
HSL	hsl(221, 99%, 66%)
HSV	hsv(221, 68%, 100%)
CMYK	cmyk(68.1%, 46.5%, 0%, 0.4%)
CIE-LAB	lab(58.52, 19.54, -64.15)
CIE-LCH	lch(58.52, 67.06, 286.94°)
OKLab	oklab(64.9% -0.0214 -0.1838)
OKLCH	oklch(64.9% 0.185 263.4)
XYZ	xyz(30.0806, 26.5104, 97.2784)
Luminance	0.2651 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5188FE #FEC751

analogous

#51DEFE #5188FE #7051FE

triadic

#5188FE #FE5188 #88FE51

tetradic

#5188FE #FE51DE #FEC751 #51FE70

square

#5188FE #FE51DE #FEC751 #51FE70

split-complementary

#5188FE #FE7051 #DEFE51

monochromatic

#0144D3 #145EFE #5188FE #8EB2FE #CBDBFF

Accessibility & contrast

On white

3.33

#5188FE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.30

#5188FE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5188FE

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5188FE	#FFFFFF	#000000	##000000
##5188FE	1.00	3.33	6.30	6.30
#FFFFFF	3.33	1.00	21.00	21.00
#000000	6.30	21.00	1.00	1.00
##000000	6.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A95FF

Deuteranopia (green-blind)

#2285FC

Tritanopia (blue-blind)

#00A4B7

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #5188fe;
/* rgb */ color: rgb(81, 136, 254);
/* oklch */ color: oklch(64.9% 0.185 263.4);

Tailwind

colors: {
  custom: {
    50: '#94aaff',
    500: '#5188fe',
    950: '#000000',
  },
}

SCSS

$custom: #5188fe;
$custom-light: #94aaff;
$custom-dark: #000000;

JSON

{
  "hex": "#5188fe",
  "rgb": {
    "r": 81,
    "g": 136,
    "b": 254
  },
  "hsl": {
    "h": 220.925,
    "s": 98.857,
    "l": 65.686
  },
  "oklch": {
    "l": 0.64903,
    "c": 0.18505,
    "h": 263.4
  },
  "luminance": 0.26513
}

Semantic roles & 50–950 ramp

primary

#5188FE

secondary

#F2E0B9

accent

#9D00E6

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0F0F18

muted

#7E7F86

Preview Lab

Preview with #5188FE

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

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