#537CB9#537CB9

#537CB9 is a mid, moderate blue. Relative luminance 0.198; OKLCH L 58.3% C 0.105 H 258.1°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#537CB9
RGB	rgb(83, 124, 185)
HSL	hsl(216, 42%, 53%)
HSV	hsv(216, 55%, 73%)
CMYK	cmyk(55.1%, 33%, 0%, 27.5%)
CIE-LAB	lab(51.56, 3.84, -36.44)
CIE-LCH	lch(51.56, 36.64, 276.01°)
OKLab	oklab(58.33% -0.0216 -0.1027)
OKLCH	oklch(58.33% 0.105 258.1)
XYZ	xyz(19.5289, 19.7555, 48.6736)
Luminance	0.1976 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537CB9 #B99053

analogous

#53AFB9 #537CB9 #5D53B9

triadic

#537CB9 #B9537C #7CB953

tetradic

#537CB9 #B953AF #B99053 #53B95D

square

#537CB9 #B953AF #B99053 #53B95D

split-complementary

#537CB9 #B95D53 #AFB953

monochromatic

#2A4367 #3C5F93 #537CB9 #7E9DCB #AABEDC

Accessibility & contrast

On white

4.24

#537CB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#537CB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537CB9

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537CB9	#FFFFFF	#000000	##000000
##537CB9	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6380BC

Deuteranopia (green-blind)

#5776B8

Tritanopia (blue-blind)

#138A92

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #537cb9;
/* rgb */ color: rgb(83, 124, 185);
/* oklch */ color: oklch(58.3% 0.105 258.1);

Tailwind

colors: {
  custom: {
    50: '#8aa1ce',
    500: '#537cb9',
    950: '#000000',
  },
}

SCSS

$custom: #537cb9;
$custom-light: #8aa1ce;
$custom-dark: #000000;

JSON

{
  "hex": "#537cb9",
  "rgb": {
    "r": 83,
    "g": 124,
    "b": 185
  },
  "hsl": {
    "h": 215.882,
    "s": 42.149,
    "l": 52.549
  },
  "oklch": {
    "l": 0.58331,
    "c": 0.105,
    "h": 258.1
  },
  "luminance": 0.19757
}

Semantic roles & 50–950 ramp

primary

#537CB9

secondary

#CAB89E

accent

#A056D2

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #537CB9

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

Preview Lab → · Contrast checker → · Palette generator →