#537BCF#537BCF

#537BCF is a mid, vivid blue. Relative luminance 0.205; OKLCH L 59.4% C 0.136 H 263.6°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#537BCF
RGB	rgb(83, 123, 207)
HSL	hsl(221, 56%, 57%)
HSV	hsv(221, 60%, 81%)
CMYK	cmyk(59.9%, 40.6%, 0%, 18.8%)
CIE-LAB	lab(52.41, 11.71, -47.67)
CIE-LCH	lch(52.41, 49.09, 283.81°)
OKLab	oklab(59.36% -0.0153 -0.1355)
OKLCH	oklch(59.36% 0.136 263.6)
XYZ	xyz(21.9088, 20.5080, 61.8233)
Luminance	0.2051 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BCF #CFA753

analogous

#53B9CF #537BCF #6953CF

triadic

#537BCF #CF537B #7BCF53

tetradic

#537BCF #CF53B9 #CFA753 #53CF69

square

#537BCF #CF53B9 #CFA753 #53CF69

split-complementary

#537BCF #CF6953 #B9CF53

monochromatic

#254383 #325CB3 #537BCF #83A0DC #B3C4EA

Accessibility & contrast

On white

4.12

#537BCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#537BCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BCF

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BCF	#FFFFFF	#000000	##000000
##537BCF	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5683D2

Deuteranopia (green-blind)

#4578CD

Tritanopia (blue-blind)

#008E9B

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #537bcf;
/* rgb */ color: rgb(83, 123, 207);
/* oklch */ color: oklch(59.4% 0.136 263.6);

Tailwind

colors: {
  custom: {
    50: '#8da0de',
    500: '#537bcf',
    950: '#000000',
  },
}

SCSS

$custom: #537bcf;
$custom-light: #8da0de;
$custom-dark: #000000;

JSON

{
  "hex": "#537bcf",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 207
  },
  "hsl": {
    "h": 220.645,
    "s": 56.364,
    "l": 56.863
  },
  "oklch": {
    "l": 0.59357,
    "c": 0.13641,
    "h": 263.6
  },
  "luminance": 0.2051
}

Semantic roles & 50–950 ramp

primary

#537BCF

secondary

#D8C8A6

accent

#AF48E0

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #537BCF

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

Preview Lab → · Contrast checker → · Palette generator →