#537CCB#537CCB

#537CCB is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.3% C 0.130 H 262.4°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#537CCB
RGB	rgb(83, 124, 203)
HSL	hsl(220, 54%, 56%)
HSV	hsv(220, 59%, 80%)
CMYK	cmyk(59.1%, 38.9%, 0%, 20.4%)
CIE-LAB	lab(52.47, 9.76, -45.30)
CIE-LCH	lch(52.47, 46.34, 282.16°)
OKLab	oklab(59.34% -0.0172 -0.1286)
OKLCH	oklch(59.34% 0.13 262.4)
XYZ	xyz(21.5507, 20.5643, 59.3220)
Luminance	0.2057 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537CCB #CBA253

analogous

#53B8CB #537CCB #6653CB

triadic

#537CCB #CB537C #7CCB53

tetradic

#537CCB #CB53B8 #CBA253 #53CB66

square

#537CCB #CB53B8 #CBA253 #53CB66

split-complementary

#537CCB #CB6653 #B8CB53

monochromatic

#26447E #345DAD #537CCB #82A0D9 #B1C4E7

Accessibility & contrast

On white

4.11

#537CCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#537CCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537CCB

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537CCB	#FFFFFF	#000000	##000000
##537CCB	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A83CE

Deuteranopia (green-blind)

#4A78C9

Tritanopia (blue-blind)

#008E9A

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #537ccb;
/* rgb */ color: rgb(83, 124, 203);
/* oklch */ color: oklch(59.3% 0.130 262.4);

Tailwind

colors: {
  custom: {
    50: '#8da1db',
    500: '#537ccb',
    950: '#000000',
  },
}

SCSS

$custom: #537ccb;
$custom-light: #8da1db;
$custom-dark: #000000;

JSON

{
  "hex": "#537ccb",
  "rgb": {
    "r": 83,
    "g": 124,
    "b": 203
  },
  "hsl": {
    "h": 219.5,
    "s": 53.571,
    "l": 56.078
  },
  "oklch": {
    "l": 0.59335,
    "c": 0.12973,
    "h": 262.4
  },
  "luminance": 0.20566
}

Semantic roles & 50–950 ramp

primary

#537CCB

secondary

#D6C5A4

accent

#AB4BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #537CCB

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

Preview Lab → · Contrast checker → · Palette generator →