#337BA5#337BA5

#337BA5 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.6% C 0.096 H 237.7°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#337BA5
RGB	rgb(51, 123, 165)
HSL	hsl(202, 53%, 42%)
HSV	hsv(202, 69%, 65%)
CMYK	cmyk(69.1%, 25.5%, 0%, 35.3%)
CIE-LAB	lab(48.99, -8.51, -28.99)
CIE-LCH	lch(48.99, 30.21, 253.65°)
OKLab	oklab(55.63% -0.0515 -0.0816)
OKLCH	oklch(55.63% 0.096 237.7)
XYZ	xyz(15.2371, 17.5847, 38.1812)
Luminance	0.1759 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BA5 #A55D33

analogous

#33A596 #337BA5 #3342A5

triadic

#337BA5 #A5337B #7BA533

tetradic

#337BA5 #9633A5 #A55D33 #42A533

square

#337BA5 #9633A5 #A55D33 #42A533

split-complementary

#337BA5 #A53342 #A59633

monochromatic

#163548 #255876 #337BA5 #4D9BC8 #7CB5D6

Accessibility & contrast

On white

4.65

#337BA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#337BA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337BA5

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BA5	#FFFFFF	#000000	##FFFFFF
##337BA5	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#677BA7

Deuteranopia (green-blind)

#586FA4

Tritanopia (blue-blind)

#008689

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #337ba5;
/* rgb */ color: rgb(51, 123, 165);
/* oklch */ color: oklch(55.6% 0.096 237.7);

Tailwind

colors: {
  custom: {
    50: '#78a1c0',
    500: '#337ba5',
    950: '#000000',
  },
}

SCSS

$custom: #337ba5;
$custom-light: #78a1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#337ba5",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 165
  },
  "hsl": {
    "h": 202.105,
    "s": 52.778,
    "l": 42.353
  },
  "oklch": {
    "l": 0.55632,
    "c": 0.09646,
    "h": 237.7
  },
  "luminance": 0.17586
}

Semantic roles & 50–950 ramp

primary

#337BA5

secondary

#BF9075

accent

#814CDC

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337BA5

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

Preview Lab → · Contrast checker → · Palette generator →