#537BB7#537BB7

#537BB7 is a mid, moderate blue. Relative luminance 0.194; OKLCH L 58.0% C 0.103 H 258.3°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#537BB7
RGB	rgb(83, 123, 183)
HSL	hsl(216, 41%, 52%)
HSV	hsv(216, 55%, 72%)
CMYK	cmyk(54.6%, 32.8%, 0%, 28.2%)
CIE-LAB	lab(51.18, 3.79, -35.89)
CIE-LCH	lch(51.18, 36.09, 276.03°)
OKLab	oklab(58% -0.021 -0.1012)
OKLCH	oklch(58% 0.103 258.3)
XYZ	xyz(19.1945, 19.4223, 47.5280)
Luminance	0.1942 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BB7 #B78F53

analogous

#53ADB7 #537BB7 #5D53B7

triadic

#537BB7 #B7537B #7BB753

tetradic

#537BB7 #B753AD #B78F53 #53B75D

square

#537BB7 #B753AD #B78F53 #53B75D

split-complementary

#537BB7 #B75D53 #ADB753

monochromatic

#2A4265 #3C5E90 #537BB7 #7E9CC9 #A9BDDB

Accessibility & contrast

On white

4.30

#537BB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#537BB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BB7

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BB7	#FFFFFF	#000000	##000000
##537BB7	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637FBA

Deuteranopia (green-blind)

#5776B6

Tritanopia (blue-blind)

#178891

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #537bb7;
/* rgb */ color: rgb(83, 123, 183);
/* oklch */ color: oklch(58.0% 0.103 258.3);

Tailwind

colors: {
  custom: {
    50: '#8aa0cd',
    500: '#537bb7',
    950: '#000000',
  },
}

SCSS

$custom: #537bb7;
$custom-light: #8aa0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#537bb7",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 183
  },
  "hsl": {
    "h": 216,
    "s": 40.984,
    "l": 52.157
  },
  "oklch": {
    "l": 0.58001,
    "c": 0.10331,
    "h": 258.3
  },
  "luminance": 0.19424
}

Semantic roles & 50–950 ramp

primary

#537BB7

secondary

#C9B79D

accent

#A057D1

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #537BB7

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

Preview Lab → · Contrast checker → · Palette generator →