#337AA7#337AA7

#337AA7 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.5% C 0.099 H 239.9°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#337AA7
RGB	rgb(51, 122, 167)
HSL	hsl(203, 53%, 43%)
HSV	hsv(203, 69%, 65%)
CMYK	cmyk(69.5%, 26.9%, 0%, 34.5%)
CIE-LAB	lab(48.77, -7.22, -30.49)
CIE-LCH	lch(48.77, 31.33, 256.67°)
OKLab	oklab(55.49% -0.0498 -0.0859)
OKLCH	oklch(55.49% 0.099 239.9)
XYZ	xyz(15.2971, 17.4112, 39.1062)
Luminance	0.1741 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AA7 #A76033

analogous

#33A79A #337AA7 #3340A7

triadic

#337AA7 #A7337A #7AA733

tetradic

#337AA7 #9A33A7 #A76033 #40A733

square

#337AA7 #9A33A7 #A76033 #40A733

split-complementary

#337AA7 #A73340 #A79A33

monochromatic

#163649 #255878 #337AA7 #4E99C9 #7DB4D7

Accessibility & contrast

On white

4.68

#337AA7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#337AA7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337AA7

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AA7	#FFFFFF	#000000	##FFFFFF
##337AA7	1.00	4.68	4.48	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#657AA9

Deuteranopia (green-blind)

#556FA6

Tritanopia (blue-blind)

#008589

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #337aa7;
/* rgb */ color: rgb(51, 122, 167);
/* oklch */ color: oklch(55.5% 0.099 239.9);

Tailwind

colors: {
  custom: {
    50: '#78a0c1',
    500: '#337aa7',
    950: '#000000',
  },
}

SCSS

$custom: #337aa7;
$custom-light: #78a0c1;
$custom-dark: #000000;

JSON

{
  "hex": "#337aa7",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 167
  },
  "hsl": {
    "h": 203.276,
    "s": 53.211,
    "l": 42.745
  },
  "oklch": {
    "l": 0.55492,
    "c": 0.09929,
    "h": 239.9
  },
  "luminance": 0.17413
}

Semantic roles & 50–950 ramp

primary

#337AA7

secondary

#C09376

accent

#844BDD

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337AA7

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

Preview Lab → · Contrast checker → · Palette generator →