#537CBB#537CBB

#537CBB is a mid, moderate blue. Relative luminance 0.198; OKLCH L 58.4% C 0.108 H 258.7°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#537CBB
RGB	rgb(83, 124, 187)
HSL	hsl(216, 43%, 53%)
HSV	hsv(216, 56%, 73%)
CMYK	cmyk(55.6%, 33.7%, 0%, 26.7%)
CIE-LAB	lab(51.66, 4.49, -37.44)
CIE-LCH	lch(51.66, 37.71, 276.83°)
OKLab	oklab(58.44% -0.0211 -0.1056)
OKLCH	oklch(58.44% 0.108 258.7)
XYZ	xyz(19.7415, 19.8406, 49.7934)
Luminance	0.1984 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537CBB #BB9253

analogous

#53B0BB #537CBB #5E53BB

triadic

#537CBB #BB537C #7CBB53

tetradic

#537CBB #BB53B0 #BB9253 #53BB5E

square

#537CBB #BB53B0 #BB9253 #53BB5E

split-complementary

#537CBB #BB5E53 #B0BB53

monochromatic

#2A436A #3B5F96 #537CBB #7F9DCC #ABBFDE

Accessibility & contrast

On white

4.23

#537CBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#537CBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537CBB

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537CBB	#FFFFFF	#000000	##000000
##537CBB	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6380BE

Deuteranopia (green-blind)

#5677BA

Tritanopia (blue-blind)

#0E8A93

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #537cbb;
/* rgb */ color: rgb(83, 124, 187);
/* oklch */ color: oklch(58.4% 0.108 258.7);

Tailwind

colors: {
  custom: {
    50: '#8ba1d0',
    500: '#537cbb',
    950: '#000000',
  },
}

SCSS

$custom: #537cbb;
$custom-light: #8ba1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#537cbb",
  "rgb": {
    "r": 83,
    "g": 124,
    "b": 187
  },
  "hsl": {
    "h": 216.346,
    "s": 43.333,
    "l": 52.941
  },
  "oklch": {
    "l": 0.58438,
    "c": 0.10773,
    "h": 258.7
  },
  "luminance": 0.19842
}

Semantic roles & 50–950 ramp

primary

#537CBB

secondary

#CBBA9E

accent

#A155D3

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #537CBB

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

Preview Lab → · Contrast checker → · Palette generator →