#537EC9#537EC9

#537EC9 is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.7% C 0.125 H 260.9°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#537EC9
RGB	rgb(83, 126, 201)
HSL	hsl(218, 52%, 56%)
HSV	hsv(218, 59%, 79%)
CMYK	cmyk(58.7%, 37.3%, 0%, 21.2%)
CIE-LAB	lab(52.92, 7.89, -43.44)
CIE-LCH	lch(52.92, 44.15, 280.29°)
OKLab	oklab(59.65% -0.0198 -0.1231)
OKLCH	oklch(59.65% 0.125 260.9)
XYZ	xyz(21.5671, 20.9759, 58.1592)
Luminance	0.2098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537EC9 #C99E53

analogous

#53B9C9 #537EC9 #6353C9

triadic

#537EC9 #C9537E #7EC953

tetradic

#537EC9 #C953B9 #C99E53 #53C963

square

#537EC9 #C953B9 #C99E53 #53C963

split-complementary

#537EC9 #C96353 #B9C953

monochromatic

#27457B #3560AA #537EC9 #82A1D8 #B0C4E6

Accessibility & contrast

On white

4.04

#537EC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#537EC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537EC9

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537EC9	#FFFFFF	#000000	##000000
##537EC9	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E84CC

Deuteranopia (green-blind)

#4F79C7

Tritanopia (blue-blind)

#008F9A

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #537ec9;
/* rgb */ color: rgb(83, 126, 201);
/* oklch */ color: oklch(59.7% 0.125 260.9);

Tailwind

colors: {
  custom: {
    50: '#8ca3da',
    500: '#537ec9',
    950: '#000000',
  },
}

SCSS

$custom: #537ec9;
$custom-light: #8ca3da;
$custom-dark: #000000;

JSON

{
  "hex": "#537ec9",
  "rgb": {
    "r": 83,
    "g": 126,
    "b": 201
  },
  "hsl": {
    "h": 218.136,
    "s": 52.212,
    "l": 55.686
  },
  "oklch": {
    "l": 0.59653,
    "c": 0.12472,
    "h": 260.9
  },
  "luminance": 0.20978
}

Semantic roles & 50–950 ramp

primary

#537EC9

secondary

#D4C3A3

accent

#A74CDC

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #537EC9

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

Preview Lab → · Contrast checker → · Palette generator →