#337BAC#337BAC

#337BAC is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 56.0% C 0.104 H 241.9°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#337BAC
RGB	rgb(51, 123, 172)
HSL	hsl(204, 54%, 44%)
HSV	hsv(204, 70%, 67%)
CMYK	cmyk(70.3%, 28.5%, 0%, 32.5%)
CIE-LAB	lab(49.31, -6.05, -32.56)
CIE-LCH	lch(49.31, 33.11, 259.47°)
OKLab	oklab(55.99% -0.0491 -0.0919)
OKLCH	oklch(55.99% 0.104 241.9)
XYZ	xyz(15.8917, 17.8465, 41.6289)
Luminance	0.1785 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BAC #AC6433

analogous

#33ACA0 #337BAC #333EAC

triadic

#337BAC #AC337B #7BAC33

tetradic

#337BAC #A033AC #AC6433 #3EAC33

square

#337BAC #A033AC #AC6433 #3EAC33

split-complementary

#337BAC #AC333E #ACA033

monochromatic

#17374E #25597D #337BAC #519ACB #80B5D9

Accessibility & contrast

On white

4.60

#337BAC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#337BAC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337BAC

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BAC	#FFFFFF	#000000	##FFFFFF
##337BAC	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#657CAE

Deuteranopia (green-blind)

#5470AB

Tritanopia (blue-blind)

#00878C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337bac;
/* rgb */ color: rgb(51, 123, 172);
/* oklch */ color: oklch(56.0% 0.104 241.9);

Tailwind

colors: {
  custom: {
    50: '#79a1c5',
    500: '#337bac',
    950: '#000000',
  },
}

SCSS

$custom: #337bac;
$custom-light: #79a1c5;
$custom-dark: #000000;

JSON

{
  "hex": "#337bac",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 172
  },
  "hsl": {
    "h": 204.298,
    "s": 54.26,
    "l": 43.725
  },
  "oklch": {
    "l": 0.55992,
    "c": 0.10422,
    "h": 241.9
  },
  "luminance": 0.17848
}

Semantic roles & 50–950 ramp

primary

#337BAC

secondary

#C29678

accent

#864ADE

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #337BAC

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

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