#537BB8#537BB8

#537BB8 is a mid, moderate blue. Relative luminance 0.195; OKLCH L 58.1% C 0.105 H 258.6°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#537BB8
RGB	rgb(83, 123, 184)
HSL	hsl(216, 42%, 52%)
HSV	hsv(216, 55%, 72%)
CMYK	cmyk(54.9%, 33.2%, 0%, 27.8%)
CIE-LAB	lab(51.23, 4.11, -36.39)
CIE-LCH	lch(51.23, 36.62, 276.45°)
OKLab	oklab(58.06% -0.0207 -0.1026)
OKLCH	oklch(58.06% 0.105 258.6)
XYZ	xyz(19.2990, 19.4641, 48.0781)
Luminance	0.1947 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BB8 #B89053

analogous

#53ADB8 #537BB8 #5E53B8

triadic

#537BB8 #B8537B #7BB853

tetradic

#537BB8 #B853AD #B89053 #53B85E

square

#537BB8 #B853AD #B89053 #53B85E

split-complementary

#537BB8 #B85E53 #ADB853

monochromatic

#2A4266 #3C5E92 #537BB8 #7E9CCA #AABDDC

Accessibility & contrast

On white

4.29

#537BB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#537BB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BB8

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BB8	#FFFFFF	#000000	##000000
##537BB8	1.00	4.29	4.89	4.89
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637FBB

Deuteranopia (green-blind)

#5676B7

Tritanopia (blue-blind)

#158991

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #537bb8;
/* rgb */ color: rgb(83, 123, 184);
/* oklch */ color: oklch(58.1% 0.105 258.6);

Tailwind

colors: {
  custom: {
    50: '#8aa0cd',
    500: '#537bb8',
    950: '#000000',
  },
}

SCSS

$custom: #537bb8;
$custom-light: #8aa0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#537bb8",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 184
  },
  "hsl": {
    "h": 216.238,
    "s": 41.564,
    "l": 52.353
  },
  "oklch": {
    "l": 0.58055,
    "c": 0.10468,
    "h": 258.6
  },
  "luminance": 0.19466
}

Semantic roles & 50–950 ramp

primary

#537BB8

secondary

#C9B89D

accent

#A156D1

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #537BB8

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

Preview Lab → · Contrast checker → · Palette generator →