#538BF0#538BF0

#538BF0 is a light, vivid blue. Relative luminance 0.266; OKLCH L 64.7% C 0.163 H 261.2°. Best body text is #000000 at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#538BF0
RGB	rgb(83, 139, 240)
HSL	hsl(219, 84%, 63%)
HSV	hsv(219, 65%, 94%)
CMYK	cmyk(65.4%, 42.1%, 0%, 5.9%)
CIE-LAB	lab(58.60, 13.22, -56.30)
CIE-LCH	lch(58.60, 57.83, 283.21°)
OKLab	oklab(64.72% -0.0248 -0.1607)
OKLCH	oklch(64.72% 0.163 261.2)
XYZ	xyz(28.5225, 26.5927, 86.0509)
Luminance	0.2660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#538BF0 #F0B853

analogous

#53D9F0 #538BF0 #6953F0

triadic

#538BF0 #F0538B #8BF053

tetradic

#538BF0 #F053D9 #F0B853 #53F069

square

#538BF0 #F053D9 #F0B853 #53F069

split-complementary

#538BF0 #F06953 #D9F053

monochromatic

#104CB9 #1B65EB #538BF0 #8BB1F5 #C4D7FA

Accessibility & contrast

On white

3.32

#538BF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.32

#538BF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #538BF0

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##538BF0	#FFFFFF	#000000	##000000
##538BF0	1.00	3.32	6.32	6.32
#FFFFFF	3.32	1.00	21.00	21.00
#000000	6.32	21.00	1.00	1.00
##000000	6.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C95F4

Deuteranopia (green-blind)

#4386EE

Tritanopia (blue-blind)

#00A2B2

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #538bf0;
/* rgb */ color: rgb(83, 139, 240);
/* oklch */ color: oklch(64.7% 0.163 261.2);

Tailwind

colors: {
  custom: {
    50: '#92acf5',
    500: '#538bf0',
    950: '#000000',
  },
}

SCSS

$custom: #538bf0;
$custom-light: #92acf5;
$custom-dark: #000000;

JSON

{
  "hex": "#538bf0",
  "rgb": {
    "r": 83,
    "g": 139,
    "b": 240
  },
  "hsl": {
    "h": 218.599,
    "s": 83.957,
    "l": 63.333
  },
  "oklch": {
    "l": 0.64724,
    "c": 0.16257,
    "h": 261.2
  },
  "luminance": 0.26596
}

Semantic roles & 50–950 ramp

primary

#538BF0

secondary

#EBD7B3

accent

#9205E0

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #538BF0

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

Preview Lab → · Contrast checker → · Palette generator →