#337DB2#337DB2

#337DB2 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.8% C 0.110 H 243.3°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#337DB2
RGB	rgb(51, 125, 178)
HSL	hsl(205, 55%, 45%)
HSV	hsv(205, 71%, 70%)
CMYK	cmyk(71.3%, 29.8%, 0%, 30.2%)
CIE-LAB	lab(50.20, -5.11, -34.64)
CIE-LCH	lch(50.20, 35.01, 261.62°)
OKLab	oklab(56.79% -0.0492 -0.0979)
OKLCH	oklch(56.79% 0.11 243.3)
XYZ	xyz(16.7317, 18.5835, 44.8160)
Luminance	0.1858 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337DB2 #B26833

analogous

#33B2A7 #337DB2 #333EB2

triadic

#337DB2 #B2337D #7DB233

tetradic

#337DB2 #A733B2 #B26833 #3EB233

square

#337DB2 #A733B2 #B26833 #3EB233

split-complementary

#337DB2 #B2333E #B2A733

monochromatic

#183A53 #255C82 #337DB2 #549BCE #84B7DC

Accessibility & contrast

On white

4.45

#337DB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#337DB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337DB2

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337DB2	#FFFFFF	#000000	##000000
##337DB2	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)

#657EB4

Deuteranopia (green-blind)

#5372B1

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337db2;
/* rgb */ color: rgb(51, 125, 178);
/* oklch */ color: oklch(56.8% 0.110 243.3);

Tailwind

colors: {
  custom: {
    50: '#7aa2c9',
    500: '#337db2',
    950: '#000000',
  },
}

SCSS

$custom: #337db2;
$custom-light: #7aa2c9;
$custom-dark: #000000;

JSON

{
  "hex": "#337db2",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 178
  },
  "hsl": {
    "h": 205.039,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.56787,
    "c": 0.10962,
    "h": 243.3
  },
  "luminance": 0.18585
}

Semantic roles & 50–950 ramp

primary

#337DB2

secondary

#C59A7C

accent

#8849DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #337DB2

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

Preview Lab → · Contrast checker → · Palette generator →