#337CA9#337CA9

#337CA9 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.1% C 0.100 H 239.3°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#337CA9
RGB	rgb(51, 124, 169)
HSL	hsl(203, 54%, 43%)
HSV	hsv(203, 70%, 66%)
CMYK	cmyk(69.8%, 26.6%, 0%, 33.7%)
CIE-LAB	lab(49.47, -7.69, -30.56)
CIE-LCH	lch(49.47, 31.51, 255.87°)
OKLab	oklab(56.08% -0.0512 -0.0861)
OKLCH	oklch(56.08% 0.1 239.3)
XYZ	xyz(15.7315, 17.9820, 40.1702)
Luminance	0.1798 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CA9 #A96033

analogous

#33A99B #337CA9 #3341A9

triadic

#337CA9 #A9337C #7CA933

tetradic

#337CA9 #9B33A9 #A96033 #41A933

square

#337CA9 #9B33A9 #A96033 #41A933

split-complementary

#337CA9 #A93341 #A99B33

monochromatic

#17374B #255A7A #337CA9 #4F9BCA #7EB6D8

Accessibility & contrast

On white

4.57

#337CA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#337CA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CA9

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CA9	#FFFFFF	#000000	##000000
##337CA9	1.00	4.57	4.60	4.60
#FFFFFF	4.57	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)

#677CAB

Deuteranopia (green-blind)

#5771A8

Tritanopia (blue-blind)

#00878B

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337ca9;
/* rgb */ color: rgb(51, 124, 169);
/* oklch */ color: oklch(56.1% 0.100 239.3);

Tailwind

colors: {
  custom: {
    50: '#79a1c2',
    500: '#337ca9',
    950: '#000000',
  },
}

SCSS

$custom: #337ca9;
$custom-light: #79a1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#337ca9",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 169
  },
  "hsl": {
    "h": 202.881,
    "s": 53.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.56077,
    "c": 0.10015,
    "h": 239.3
  },
  "luminance": 0.17984
}

Semantic roles & 50–950 ramp

primary

#337CA9

secondary

#C19377

accent

#834BDD

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #337CA9

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

Preview Lab → · Contrast checker → · Palette generator →