#537BB4#537BB4

#537BB4 is a mid, moderate blue. Relative luminance 0.193; OKLCH L 57.8% C 0.099 H 257.3°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#537BB4
RGB	rgb(83, 123, 180)
HSL	hsl(215, 39%, 52%)
HSV	hsv(215, 54%, 71%)
CMYK	cmyk(53.9%, 31.7%, 0%, 29.4%)
CIE-LAB	lab(51.03, 2.82, -34.39)
CIE-LCH	lch(51.03, 34.50, 274.69°)
OKLab	oklab(57.84% -0.0218 -0.0968)
OKLCH	oklch(57.84% 0.099 257.3)
XYZ	xyz(18.8856, 19.2987, 45.9010)
Luminance	0.1930 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BB4 #B48C53

analogous

#53ABB4 #537BB4 #5C53B4

triadic

#537BB4 #B4537B #7BB453

tetradic

#537BB4 #B453AB #B48C53 #53B45C

square

#537BB4 #B453AB #B48C53 #53B45C

split-complementary

#537BB4 #B45C53 #ABB453

monochromatic

#2B4162 #3D5E8D #537BB4 #7E9CC7 #A8BCD9

Accessibility & contrast

On white

4.32

#537BB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#537BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BB4

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BB4	#FFFFFF	#000000	##000000
##537BB4	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647FB6

Deuteranopia (green-blind)

#5875B3

Tritanopia (blue-blind)

#1C888F

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #537bb4;
/* rgb */ color: rgb(83, 123, 180);
/* oklch */ color: oklch(57.8% 0.099 257.3);

Tailwind

colors: {
  custom: {
    50: '#8aa0ca',
    500: '#537bb4',
    950: '#000000',
  },
}

SCSS

$custom: #537bb4;
$custom-light: #8aa0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#537bb4",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 180
  },
  "hsl": {
    "h": 215.258,
    "s": 39.271,
    "l": 51.569
  },
  "oklch": {
    "l": 0.57843,
    "c": 0.09921,
    "h": 257.3
  },
  "luminance": 0.193
}

Semantic roles & 50–950 ramp

primary

#537BB4

secondary

#C7B59C

accent

#9E59CF

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #537BB4

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

Preview Lab → · Contrast checker → · Palette generator →