#537ACF#537ACF

#537ACF is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.1% C 0.138 H 264.1°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#537ACF
RGB	rgb(83, 122, 207)
HSL	hsl(221, 56%, 57%)
HSV	hsv(221, 60%, 81%)
CMYK	cmyk(59.9%, 41.1%, 0%, 18.8%)
CIE-LAB	lab(52.13, 12.32, -48.11)
CIE-LCH	lch(52.13, 49.66, 284.37°)
OKLab	oklab(59.14% -0.0142 -0.1368)
OKLCH	oklch(59.14% 0.138 264.1)
XYZ	xyz(21.7854, 20.2612, 61.7821)
Luminance	0.2026 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537ACF #CFA853

analogous

#53B8CF #537ACF #6A53CF

triadic

#537ACF #CF537A #7ACF53

tetradic

#537ACF #CF53B8 #CFA853 #53CF6A

square

#537ACF #CF53B8 #CFA853 #53CF6A

split-complementary

#537ACF #CF6A53 #B8CF53

monochromatic

#254283 #325AB3 #537ACF #839FDC #B3C4EA

Accessibility & contrast

On white

4.16

#537ACF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#537ACF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537ACF

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537ACF	#FFFFFF	#000000	##000000
##537ACF	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5582D2

Deuteranopia (green-blind)

#4477CD

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #537acf;
/* rgb */ color: rgb(83, 122, 207);
/* oklch */ color: oklch(59.1% 0.138 264.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#537acf",
  "rgb": {
    "r": 83,
    "g": 122,
    "b": 207
  },
  "hsl": {
    "h": 221.129,
    "s": 56.364,
    "l": 56.863
  },
  "oklch": {
    "l": 0.59144,
    "c": 0.13759,
    "h": 264.1
  },
  "luminance": 0.20263
}

Semantic roles & 50–950 ramp

primary

#537ACF

secondary

#D8C8A6

accent

#B048E0

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #537ACF

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

Preview Lab → · Contrast checker → · Palette generator →