#538EF0#538EF0

#538EF0 is a light, vivid blue. Relative luminance 0.275; OKLCH L 65.4% C 0.159 H 260.0°. Best body text is #000000 at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#538EF0
RGB	rgb(83, 142, 240)
HSL	hsl(217, 84%, 63%)
HSV	hsv(217, 65%, 94%)
CMYK	cmyk(65.4%, 40.8%, 0%, 5.9%)
CIE-LAB	lab(59.41, 11.42, -55.00)
CIE-LCH	lch(59.41, 56.17, 281.73°)
OKLab	oklab(65.35% -0.0277 -0.1568)
OKLCH	oklch(65.35% 0.159 260)
XYZ	xyz(28.9629, 27.4734, 86.1977)
Luminance	0.2748 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#538EF0 #F0B553

analogous

#53DDF0 #538EF0 #6653F0

triadic

#538EF0 #F0538E #8EF053

tetradic

#538EF0 #F053DD #F0B553 #53F066

square

#538EF0 #F053DD #F0B553 #53F066

split-complementary

#538EF0 #F06653 #DDF053

monochromatic

#104FB9 #1B69EB #538EF0 #8BB3F5 #C4D8FA

Accessibility & contrast

On white

3.23

#538EF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.50

#538EF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #538EF0

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##538EF0	#FFFFFF	#000000	##000000
##538EF0	1.00	3.23	6.50	6.50
#FFFFFF	3.23	1.00	21.00	21.00
#000000	6.50	21.00	1.00	1.00
##000000	6.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6197F4

Deuteranopia (green-blind)

#4988EE

Tritanopia (blue-blind)

#00A4B3

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #538ef0;
/* rgb */ color: rgb(83, 142, 240);
/* oklch */ color: oklch(65.4% 0.159 260.0);

Tailwind

colors: {
  custom: {
    50: '#92aef5',
    500: '#538ef0',
    950: '#000000',
  },
}

SCSS

$custom: #538ef0;
$custom-light: #92aef5;
$custom-dark: #000000;

JSON

{
  "hex": "#538ef0",
  "rgb": {
    "r": 83,
    "g": 142,
    "b": 240
  },
  "hsl": {
    "h": 217.452,
    "s": 83.957,
    "l": 63.333
  },
  "oklch": {
    "l": 0.65354,
    "c": 0.15923,
    "h": 260
  },
  "luminance": 0.27476
}

Semantic roles & 50–950 ramp

primary

#538EF0

secondary

#EBD6B3

accent

#8E05E0

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #538EF0

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

Preview Lab → · Contrast checker → · Palette generator →