#537FBB#537FBB

#537FBB is a mid, moderate cyan. Relative luminance 0.206; OKLCH L 59.1% C 0.105 H 256.4°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#537FBB
RGB	rgb(83, 127, 187)
HSL	hsl(215, 43%, 53%)
HSV	hsv(215, 56%, 73%)
CMYK	cmyk(55.6%, 32.1%, 0%, 26.7%)
CIE-LAB	lab(52.51, 2.69, -36.09)
CIE-LCH	lch(52.51, 36.19, 274.26°)
OKLab	oklab(59.11% -0.0245 -0.1017)
OKLCH	oklch(59.11% 0.105 256.4)
XYZ	xyz(20.1232, 20.6040, 49.9206)
Luminance	0.2061 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537FBB #BB8F53

analogous

#53B3BB #537FBB #5B53BB

triadic

#537FBB #BB537F #7FBB53

tetradic

#537FBB #BB53B3 #BB8F53 #53BB5B

square

#537FBB #BB53B3 #BB8F53 #53BB5B

split-complementary

#537FBB #BB5B53 #B3BB53

monochromatic

#2A456A #3B6196 #537FBB #7FA0CC #ABC0DE

Accessibility & contrast

On white

4.10

#537FBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#537FBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537FBB

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537FBB	#FFFFFF	#000000	##000000
##537FBB	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6783BE

Deuteranopia (green-blind)

#5A79BA

Tritanopia (blue-blind)

#0B8C94

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #537fbb;
/* rgb */ color: rgb(83, 127, 187);
/* oklch */ color: oklch(59.1% 0.105 256.4);

Tailwind

colors: {
  custom: {
    50: '#8ba3cf',
    500: '#537fbb',
    950: '#000000',
  },
}

SCSS

$custom: #537fbb;
$custom-light: #8ba3cf;
$custom-dark: #000000;

JSON

{
  "hex": "#537fbb",
  "rgb": {
    "r": 83,
    "g": 127,
    "b": 187
  },
  "hsl": {
    "h": 214.615,
    "s": 43.333,
    "l": 52.941
  },
  "oklch": {
    "l": 0.59107,
    "c": 0.10463,
    "h": 256.4
  },
  "luminance": 0.20606
}

Semantic roles & 50–950 ramp

primary

#537FBB

secondary

#CBB89E

accent

#9E55D3

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #537FBB

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

Preview Lab → · Contrast checker → · Palette generator →