#337CAA#337CAA

#337CAA is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.1% C 0.101 H 239.9°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#337CAA
RGB	rgb(51, 124, 170)
HSL	hsl(203, 54%, 43%)
HSV	hsv(203, 70%, 67%)
CMYK	cmyk(70%, 27.1%, 0%, 33.3%)
CIE-LAB	lab(49.52, -7.34, -31.07)
CIE-LCH	lch(49.52, 31.92, 256.70°)
OKLab	oklab(56.13% -0.0508 -0.0876)
OKLCH	oklch(56.13% 0.101 239.9)
XYZ	xyz(15.8258, 18.0197, 40.6665)
Luminance	0.1802 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CAA #AA6133

analogous

#33AA9C #337CAA #3341AA

triadic

#337CAA #AA337C #7CAA33

tetradic

#337CAA #9C33AA #AA6133 #41AA33

square

#337CAA #9C33AA #AA6133 #41AA33

split-complementary

#337CAA #AA3341 #AA9C33

monochromatic

#17374C #255A7B #337CAA #509BCA #7FB6D9

Accessibility & contrast

On white

4.56

#337CAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#337CAA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CAA

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CAA	#FFFFFF	#000000	##000000
##337CAA	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#677CAC

Deuteranopia (green-blind)

#5671A9

Tritanopia (blue-blind)

#00888C

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337caa;
/* rgb */ color: rgb(51, 124, 170);
/* oklch */ color: oklch(56.1% 0.101 239.9);

Tailwind

colors: {
  custom: {
    50: '#79a1c3',
    500: '#337caa',
    950: '#000000',
  },
}

SCSS

$custom: #337caa;
$custom-light: #79a1c3;
$custom-dark: #000000;

JSON

{
  "hex": "#337caa",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 170
  },
  "hsl": {
    "h": 203.193,
    "s": 53.846,
    "l": 43.333
  },
  "oklch": {
    "l": 0.56128,
    "c": 0.10126,
    "h": 239.9
  },
  "luminance": 0.18021
}

Semantic roles & 50–950 ramp

primary

#337CAA

secondary

#C29477

accent

#834BDD

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #337CAA

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

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