#337BAA#337BAA

#337BAA is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.9% C 0.102 H 240.8°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#337BAA
RGB	rgb(51, 123, 170)
HSL	hsl(204, 54%, 43%)
HSV	hsv(204, 70%, 67%)
CMYK	cmyk(70%, 27.6%, 0%, 33.3%)
CIE-LAB	lab(49.22, -6.76, -31.54)
CIE-LCH	lch(49.22, 32.26, 257.91°)
OKLab	oklab(55.89% -0.0498 -0.0889)
OKLCH	oklch(55.89% 0.102 240.8)
XYZ	xyz(15.7011, 17.7703, 40.6249)
Luminance	0.1777 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BAA #AA6233

analogous

#33AA9D #337BAA #3340AA

triadic

#337BAA #AA337B #7BAA33

tetradic

#337BAA #9D33AA #AA6233 #40AA33

square

#337BAA #9D33AA #AA6233 #40AA33

split-complementary

#337BAA #AA3340 #AA9D33

monochromatic

#17374C #25597B #337BAA #509ACA #7FB5D9

Accessibility & contrast

On white

4.61

#337BAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#337BAA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337BAA

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BAA	#FFFFFF	#000000	##FFFFFF
##337BAA	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#657BAC

Deuteranopia (green-blind)

#5570A9

Tritanopia (blue-blind)

#00878B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337baa;
/* rgb */ color: rgb(51, 123, 170);
/* oklch */ color: oklch(55.9% 0.102 240.8);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#337baa",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 170
  },
  "hsl": {
    "h": 203.697,
    "s": 53.846,
    "l": 43.333
  },
  "oklch": {
    "l": 0.55888,
    "c": 0.10195,
    "h": 240.8
  },
  "luminance": 0.17772
}

Semantic roles & 50–950 ramp

primary

#337BAA

secondary

#C29577

accent

#844BDD

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337BAA

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

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