#337FA5#337FA5

#337FA5 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.6% C 0.094 H 233.8°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#337FA5
RGB	rgb(51, 127, 165)
HSL	hsl(200, 53%, 42%)
HSV	hsv(200, 69%, 65%)
CMYK	cmyk(69.1%, 23%, 0%, 35.3%)
CIE-LAB	lab(50.21, -10.81, -27.08)
CIE-LCH	lch(50.21, 29.16, 248.25°)
OKLab	oklab(56.61% -0.0557 -0.076)
OKLCH	oklch(56.61% 0.094 233.8)
XYZ	xyz(15.7435, 18.5974, 38.3500)
Luminance	0.1860 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FA5 #A55933

analogous

#33A592 #337FA5 #3346A5

triadic

#337FA5 #A5337F #7FA533

tetradic

#337FA5 #9233A5 #A55933 #46A533

square

#337FA5 #9233A5 #A55933 #46A533

split-complementary

#337FA5 #A53346 #A59233

monochromatic

#163748 #255B76 #337FA5 #4D9FC8 #7CB8D6

Accessibility & contrast

On white

4.45

#337FA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#337FA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FA5

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FA5	#FFFFFF	#000000	##000000
##337FA5	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7EA7

Deuteranopia (green-blind)

#5D72A4

Tritanopia (blue-blind)

#00898C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337fa5;
/* rgb */ color: rgb(51, 127, 165);
/* oklch */ color: oklch(56.6% 0.094 233.8);

Tailwind

colors: {
  custom: {
    50: '#78a4c0',
    500: '#337fa5',
    950: '#000000',
  },
}

SCSS

$custom: #337fa5;
$custom-light: #78a4c0;
$custom-dark: #000000;

JSON

{
  "hex": "#337fa5",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 165
  },
  "hsl": {
    "h": 200,
    "s": 52.778,
    "l": 42.353
  },
  "oklch": {
    "l": 0.56605,
    "c": 0.09427,
    "h": 233.8
  },
  "luminance": 0.18599
}

Semantic roles & 50–950 ramp

primary

#337FA5

secondary

#BF8D75

accent

#7C4CDC

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #337FA5

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

Preview Lab → · Contrast checker → · Palette generator →