#337FA0#337FA0

#337FA0 is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.4% C 0.090 H 230.0°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#337FA0
RGB	rgb(51, 127, 160)
HSL	hsl(198, 52%, 41%)
HSV	hsv(198, 68%, 63%)
CMYK	cmyk(68.1%, 20.6%, 0%, 37.3%)
CIE-LAB	lab(50.00, -12.51, -24.50)
CIE-LCH	lch(50.00, 27.51, 242.95°)
OKLab	oklab(56.37% -0.0576 -0.0686)
OKLCH	oklch(56.37% 0.09 230)
XYZ	xyz(15.2973, 18.4190, 35.9999)
Luminance	0.1842 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FA0 #A05433

analogous

#33A08B #337FA0 #3349A0

triadic

#337FA0 #A0337F #7FA033

tetradic

#337FA0 #8B33A0 #A05433 #49A033

square

#337FA0 #8B33A0 #A05433 #49A033

split-complementary

#337FA0 #A03349 #A08B33

monochromatic

#153543 #245A72 #337FA0 #4BA0C6 #79B9D4

Accessibility & contrast

On white

4.48

#337FA0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#337FA0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FA0

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FA0	#FFFFFF	#000000	##000000
##337FA0	1.00	4.48	4.68	4.68
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7DA2

Deuteranopia (green-blind)

#5F72A0

Tritanopia (blue-blind)

#00888A

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337fa0;
/* rgb */ color: rgb(51, 127, 160);
/* oklch */ color: oklch(56.4% 0.090 230.0);

Tailwind

colors: {
  custom: {
    50: '#78a4bc',
    500: '#337fa0',
    950: '#000000',
  },
}

SCSS

$custom: #337fa0;
$custom-light: #78a4bc;
$custom-dark: #000000;

JSON

{
  "hex": "#337fa0",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 160
  },
  "hsl": {
    "h": 198.165,
    "s": 51.659,
    "l": 41.373
  },
  "oklch": {
    "l": 0.56366,
    "c": 0.08957,
    "h": 230
  },
  "luminance": 0.18421
}

Semantic roles & 50–950 ramp

primary

#337FA0

secondary

#BD8972

accent

#784DDB

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #337FA0

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

Preview Lab → · Contrast checker → · Palette generator →