#337AAA#337AAA

#337AAA is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.6% C 0.103 H 241.6°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#337AAA
RGB	rgb(51, 122, 170)
HSL	hsl(204, 54%, 43%)
HSV	hsv(204, 70%, 67%)
CMYK	cmyk(70%, 28.2%, 0%, 33.3%)
CIE-LAB	lab(48.91, -6.17, -32.01)
CIE-LCH	lch(48.91, 32.60, 259.09°)
OKLab	oklab(55.65% -0.0488 -0.0903)
OKLCH	oklch(55.65% 0.103 241.6)
XYZ	xyz(15.5777, 17.5235, 40.5838)
Luminance	0.1752 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AAA #AA6333

analogous

#33AA9E #337AAA #333EAA

triadic

#337AAA #AA337A #7AAA33

tetradic

#337AAA #9E33AA #AA6333 #3EAA33

square

#337AAA #9E33AA #AA6333 #3EAA33

split-complementary

#337AAA #AA333E #AA9E33

monochromatic

#17364C #25587B #337AAA #5099CA #7FB4D9

Accessibility & contrast

On white

4.66

#337AAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#337AAA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337AAA

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AAA	#FFFFFF	#000000	##FFFFFF
##337AAA	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#647BAC

Deuteranopia (green-blind)

#546FA9

Tritanopia (blue-blind)

#00868B

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #337aaa;
/* rgb */ color: rgb(51, 122, 170);
/* oklch */ color: oklch(55.6% 0.103 241.6);

Tailwind

colors: {
  custom: {
    50: '#79a0c3',
    500: '#337aaa',
    950: '#000000',
  },
}

SCSS

$custom: #337aaa;
$custom-light: #79a0c3;
$custom-dark: #000000;

JSON

{
  "hex": "#337aaa",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 170
  },
  "hsl": {
    "h": 204.202,
    "s": 53.846,
    "l": 43.333
  },
  "oklch": {
    "l": 0.55647,
    "c": 0.10267,
    "h": 241.6
  },
  "luminance": 0.17525
}

Semantic roles & 50–950 ramp

primary

#337AAA

secondary

#C29577

accent

#864BDD

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337AAA

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

Preview Lab → · Contrast checker → · Palette generator →