#337BAB#337BAB

#337BAB is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.9% C 0.103 H 241.3°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#337BAB
RGB	rgb(51, 123, 171)
HSL	hsl(204, 54%, 44%)
HSV	hsv(204, 70%, 67%)
CMYK	cmyk(70.2%, 28.1%, 0%, 32.9%)
CIE-LAB	lab(49.26, -6.41, -32.05)
CIE-LCH	lch(49.26, 32.68, 258.70°)
OKLab	oklab(55.94% -0.0495 -0.0904)
OKLCH	oklch(55.94% 0.103 241.3)
XYZ	xyz(15.7961, 17.8083, 41.1250)
Luminance	0.1781 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BAB #AB6333

analogous

#33AB9F #337BAB #333FAB

triadic

#337BAB #AB337B #7BAB33

tetradic

#337BAB #9F33AB #AB6333 #3FAB33

square

#337BAB #9F33AB #AB6333 #3FAB33

split-complementary

#337BAB #AB333F #AB9F33

monochromatic

#17374D #25597C #337BAB #509ACB #7FB5D9

Accessibility & contrast

On white

4.60

#337BAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#337BAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337BAB

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

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

Color blindness preview

Protanopia (red-blind)

#657CAD

Deuteranopia (green-blind)

#5570AA

Tritanopia (blue-blind)

#00878C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337bab;
/* rgb */ color: rgb(51, 123, 171);
/* oklch */ color: oklch(55.9% 0.103 241.3);

Tailwind

colors: {
  custom: {
    50: '#79a1c4',
    500: '#337bab',
    950: '#000000',
  },
}

SCSS

$custom: #337bab;
$custom-light: #79a1c4;
$custom-dark: #000000;

JSON

{
  "hex": "#337bab",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 171
  },
  "hsl": {
    "h": 204,
    "s": 54.054,
    "l": 43.529
  },
  "oklch": {
    "l": 0.5594,
    "c": 0.10308,
    "h": 241.3
  },
  "luminance": 0.1781
}

Semantic roles & 50–950 ramp

primary

#337BAB

secondary

#C29578

accent

#854ADD

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337BAB

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

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