#538CEF#538CEF

#538CEF is a light, vivid blue. Relative luminance 0.268; OKLCH L 64.9% C 0.160 H 260.7°. Best body text is #000000 at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#538CEF
RGB	rgb(83, 140, 239)
HSL	hsl(218, 83%, 63%)
HSV	hsv(218, 65%, 94%)
CMYK	cmyk(65.3%, 41.4%, 0%, 6.3%)
CIE-LAB	lab(58.81, 12.28, -55.40)
CIE-LCH	lch(58.81, 56.74, 282.49°)
OKLab	oklab(64.87% -0.026 -0.158)
OKLCH	oklch(64.87% 0.16 260.7)
XYZ	xyz(28.5198, 26.8244, 85.3192)
Luminance	0.2683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#538CEF #EFB653

analogous

#53DAEF #538CEF #6853EF

triadic

#538CEF #EF538C #8CEF53

tetradic

#538CEF #EF53DA #EFB653 #53EF68

square

#538CEF #EF53DA #EFB653 #53EF68

split-complementary

#538CEF #EF6853 #DAEF53

monochromatic

#114EB7 #1B67EA #538CEF #8BB1F4 #C3D7F9

Accessibility & contrast

On white

3.30

#538CEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.37

#538CEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #538CEF

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##538CEF	#FFFFFF	#000000	##000000
##538CEF	1.00	3.30	6.37	6.37
#FFFFFF	3.30	1.00	21.00	21.00
#000000	6.37	21.00	1.00	1.00
##000000	6.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E95F3

Deuteranopia (green-blind)

#4687ED

Tritanopia (blue-blind)

#00A3B2

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #538cef;
/* rgb */ color: rgb(83, 140, 239);
/* oklch */ color: oklch(64.9% 0.160 260.7);

Tailwind

colors: {
  custom: {
    50: '#92adf5',
    500: '#538cef',
    950: '#000000',
  },
}

SCSS

$custom: #538cef;
$custom-light: #92adf5;
$custom-dark: #000000;

JSON

{
  "hex": "#538cef",
  "rgb": {
    "r": 83,
    "g": 140,
    "b": 239
  },
  "hsl": {
    "h": 218.077,
    "s": 82.979,
    "l": 63.137
  },
  "oklch": {
    "l": 0.64873,
    "c": 0.16013,
    "h": 260.7
  },
  "luminance": 0.26827
}

Semantic roles & 50–950 ramp

primary

#538CEF

secondary

#EBD6B3

accent

#9006DF

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #538CEF

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

Preview Lab → · Contrast checker → · Palette generator →