#337DB0#337DB0

#337DB0 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.7% C 0.107 H 242.3°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#337DB0
RGB	rgb(51, 125, 176)
HSL	hsl(204, 55%, 45%)
HSV	hsv(204, 71%, 69%)
CMYK	cmyk(71%, 29%, 0%, 31%)
CIE-LAB	lab(50.10, -5.82, -33.63)
CIE-LCH	lch(50.10, 34.13, 260.19°)
OKLab	oklab(56.68% -0.0499 -0.095)
OKLCH	oklch(56.68% 0.107 242.3)
XYZ	xyz(16.5323, 18.5038, 43.7662)
Luminance	0.1851 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337DB0 #B06633

analogous

#33B0A5 #337DB0 #333FB0

triadic

#337DB0 #B0337D #7DB033

tetradic

#337DB0 #A533B0 #B06633 #3FB033

square

#337DB0 #A533B0 #B06633 #3FB033

split-complementary

#337DB0 #B0333F #B0A533

monochromatic

#183A51 #255B81 #337DB0 #539BCD #82B7DB

Accessibility & contrast

On white

4.47

#337DB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#337DB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337DB0

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337DB0	#FFFFFF	#000000	##000000
##337DB0	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667EB2

Deuteranopia (green-blind)

#5472AF

Tritanopia (blue-blind)

#008A8F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337db0;
/* rgb */ color: rgb(51, 125, 176);
/* oklch */ color: oklch(56.7% 0.107 242.3);

Tailwind

colors: {
  custom: {
    50: '#7aa2c8',
    500: '#337db0',
    950: '#000000',
  },
}

SCSS

$custom: #337db0;
$custom-light: #7aa2c8;
$custom-dark: #000000;

JSON

{
  "hex": "#337db0",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 176
  },
  "hsl": {
    "h": 204.48,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.56681,
    "c": 0.1073,
    "h": 242.3
  },
  "luminance": 0.18506
}

Semantic roles & 50–950 ramp

primary

#337DB0

secondary

#C4997B

accent

#8649DE

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #337DB0

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

Preview Lab → · Contrast checker → · Palette generator →