#5187DB#5187DB

#5187DB is a light, vivid blue. Relative luminance 0.242; OKLCH L 62.5% C 0.140 H 258.9°. Best body text is #000000 at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#5187DB
RGB	rgb(81, 135, 219)
HSL	hsl(217, 66%, 59%)
HSV	hsv(217, 63%, 86%)
CMYK	cmyk(63%, 38.4%, 0%, 14.1%)
CIE-LAB	lab(56.28, 8.13, -48.30)
CIE-LCH	lch(56.28, 48.98, 279.56°)
OKLab	oklab(62.54% -0.0268 -0.1373)
OKLCH	oklch(62.54% 0.14 258.9)
XYZ	xyz(24.8390, 24.1894, 70.3641)
Luminance	0.2419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5187DB #DBA551

analogous

#51CCDB #5187DB #6051DB

triadic

#5187DB #DB5187 #87DB51

tetradic

#5187DB #DB51CC #DBA551 #51DB60

square

#5187DB #DB51CC #DBA551 #51DB60

split-complementary

#5187DB #DB6051 #CCDB51

monochromatic

#1E4C93 #2966C6 #5187DB #84AAE5 #B6CDF0

Accessibility & contrast

On white

3.60

#5187DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.84

#5187DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5187DB

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5187DB	#FFFFFF	#000000	##000000
##5187DB	1.00	3.60	5.84	5.84
#FFFFFF	3.60	1.00	21.00	21.00
#000000	5.84	21.00	1.00	1.00
##000000	5.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#628EDE

Deuteranopia (green-blind)

#4F81D9

Tritanopia (blue-blind)

#009AA6

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #5187db;
/* rgb */ color: rgb(81, 135, 219);
/* oklch */ color: oklch(62.5% 0.140 258.9);

Tailwind

colors: {
  custom: {
    50: '#8ea9e6',
    500: '#5187db',
    950: '#000000',
  },
}

SCSS

$custom: #5187db;
$custom-light: #8ea9e6;
$custom-dark: #000000;

JSON

{
  "hex": "#5187db",
  "rgb": {
    "r": 81,
    "g": 135,
    "b": 219
  },
  "hsl": {
    "h": 216.522,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.62537,
    "c": 0.13988,
    "h": 258.9
  },
  "luminance": 0.24192
}

Semantic roles & 50–950 ramp

primary

#5187DB

secondary

#DFCAA9

accent

#A63FE9

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #5187DB

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

Preview Lab → · Contrast checker → · Palette generator →