#337FB7#337FB7

#337FB7 is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.5% C 0.114 H 244.1°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#337FB7
RGB	rgb(51, 127, 183)
HSL	hsl(205, 56%, 46%)
HSV	hsv(205, 72%, 72%)
CMYK	cmyk(72.1%, 30.6%, 0%, 28.2%)
CIE-LAB	lab(51.04, -4.51, -36.20)
CIE-LCH	lch(51.04, 36.48, 262.90°)
OKLab	oklab(57.53% -0.0497 -0.1025)
OKLCH	oklch(57.53% 0.114 244.1)
XYZ	xyz(17.4986, 19.2995, 47.5935)
Luminance	0.1930 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FB7 #B76B33

analogous

#33B7AD #337FB7 #333DB7

triadic

#337FB7 #B7337F #7FB733

tetradic

#337FB7 #AD33B7 #B76B33 #3DB733

square

#337FB7 #AD33B7 #B76B33 #3DB733

split-complementary

#337FB7 #B7333D #B7AD33

monochromatic

#183D57 #265E87 #337FB7 #579DD0 #87B9DE

Accessibility & contrast

On white

4.32

#337FB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#337FB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FB7

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FB7	#FFFFFF	#000000	##000000
##337FB7	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)

#6580B9

Deuteranopia (green-blind)

#5374B6

Tritanopia (blue-blind)

#008D93

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #337fb7;
/* rgb */ color: rgb(51, 127, 183);
/* oklch */ color: oklch(57.5% 0.114 244.1);

Tailwind

colors: {
  custom: {
    50: '#7ba3cd',
    500: '#337fb7',
    950: '#000000',
  },
}

SCSS

$custom: #337fb7;
$custom-light: #7ba3cd;
$custom-dark: #000000;

JSON

{
  "hex": "#337fb7",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 183
  },
  "hsl": {
    "h": 205.455,
    "s": 56.41,
    "l": 45.882
  },
  "oklch": {
    "l": 0.57529,
    "c": 0.11387,
    "h": 244.1
  },
  "luminance": 0.19301
}

Semantic roles & 50–950 ramp

primary

#337FB7

secondary

#C79D7F

accent

#8848E0

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #337FB7

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

Preview Lab → · Contrast checker → · Palette generator →