#337DAA#337DAA

#337DAA is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.4% C 0.101 H 239.0°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#337DAA
RGB	rgb(51, 125, 170)
HSL	hsl(203, 54%, 43%)
HSV	hsv(203, 70%, 67%)
CMYK	cmyk(70%, 26.5%, 0%, 33.3%)
CIE-LAB	lab(49.82, -7.92, -30.59)
CIE-LCH	lch(49.82, 31.60, 255.48°)
OKLab	oklab(56.37% -0.0519 -0.0862)
OKLCH	oklch(56.37% 0.101 239)
XYZ	xyz(15.9517, 18.2716, 40.7085)
Luminance	0.1827 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337DAA #AA6033

analogous

#33AA9B #337DAA #3341AA

triadic

#337DAA #AA337D #7DAA33

tetradic

#337DAA #9B33AA #AA6033 #41AA33

square

#337DAA #9B33AA #AA6033 #41AA33

split-complementary

#337DAA #AA3341 #AA9B33

monochromatic

#17384C #255A7B #337DAA #509CCA #7FB7D9

Accessibility & contrast

On white

4.51

#337DAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#337DAA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337DAA

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337DAA	#FFFFFF	#000000	##000000
##337DAA	1.00	4.51	4.65	4.65
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#687DAC

Deuteranopia (green-blind)

#5871A9

Tritanopia (blue-blind)

#00888C

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337daa;
/* rgb */ color: rgb(51, 125, 170);
/* oklch */ color: oklch(56.4% 0.101 239.0);

Tailwind

colors: {
  custom: {
    50: '#79a2c3',
    500: '#337daa',
    950: '#000000',
  },
}

SCSS

$custom: #337daa;
$custom-light: #79a2c3;
$custom-dark: #000000;

JSON

{
  "hex": "#337daa",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 170
  },
  "hsl": {
    "h": 202.689,
    "s": 53.846,
    "l": 43.333
  },
  "oklch": {
    "l": 0.56369,
    "c": 0.10059,
    "h": 239
  },
  "luminance": 0.18273
}

Semantic roles & 50–950 ramp

primary

#337DAA

secondary

#C29377

accent

#824BDD

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #337DAA

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

Preview Lab → · Contrast checker → · Palette generator →