#538DEF#538DEF

#538DEF is a light, vivid blue. Relative luminance 0.271; OKLCH L 65.1% C 0.159 H 260.2°. Best body text is #000000 at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#538DEF
RGB	rgb(83, 141, 239)
HSL	hsl(218, 83%, 63%)
HSV	hsv(218, 65%, 94%)
CMYK	cmyk(65.3%, 41%, 0%, 6.3%)
CIE-LAB	lab(59.08, 11.68, -54.97)
CIE-LCH	lch(59.08, 56.19, 281.99°)
OKLab	oklab(65.08% -0.0269 -0.1567)
OKLCH	oklch(65.08% 0.159 260.2)
XYZ	xyz(28.6666, 27.1179, 85.3682)
Luminance	0.2712 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#538DEF #EFB553

analogous

#53DBEF #538DEF #6753EF

triadic

#538DEF #EF538D #8DEF53

tetradic

#538DEF #EF53DB #EFB553 #53EF67

square

#538DEF #EF53DB #EFB553 #53EF67

split-complementary

#538DEF #EF6753 #DBEF53

monochromatic

#114FB7 #1B68EA #538DEF #8BB2F4 #C3D7F9

Accessibility & contrast

On white

3.27

#538DEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.42

#538DEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #538DEF

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##538DEF	#FFFFFF	#000000	##000000
##538DEF	1.00	3.27	6.42	6.42
#FFFFFF	3.27	1.00	21.00	21.00
#000000	6.42	21.00	1.00	1.00
##000000	6.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6096F3

Deuteranopia (green-blind)

#4888ED

Tritanopia (blue-blind)

#00A3B2

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #538def;
/* rgb */ color: rgb(83, 141, 239);
/* oklch */ color: oklch(65.1% 0.159 260.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#538def",
  "rgb": {
    "r": 83,
    "g": 141,
    "b": 239
  },
  "hsl": {
    "h": 217.692,
    "s": 82.979,
    "l": 63.137
  },
  "oklch": {
    "l": 0.65083,
    "c": 0.15902,
    "h": 260.2
  },
  "luminance": 0.27121
}

Semantic roles & 50–950 ramp

primary

#538DEF

secondary

#EBD6B3

accent

#8F06DF

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #538DEF

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

Preview Lab → · Contrast checker → · Palette generator →