#337CA8#337CA8

#337CA8 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 56.0% C 0.099 H 238.7°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#337CA8
RGB	rgb(51, 124, 168)
HSL	hsl(203, 53%, 43%)
HSV	hsv(203, 70%, 66%)
CMYK	cmyk(69.6%, 26.2%, 0%, 34.1%)
CIE-LAB	lab(49.43, -8.04, -30.05)
CIE-LCH	lch(49.43, 31.10, 255.02°)
OKLab	oklab(56.03% -0.0515 -0.0846)
OKLCH	oklch(56.03% 0.099 238.7)
XYZ	xyz(15.6380, 17.9446, 39.6777)
Luminance	0.1795 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CA8 #A85F33

analogous

#33A899 #337CA8 #3341A8

triadic

#337CA8 #A8337C #7CA833

tetradic

#337CA8 #9933A8 #A85F33 #41A833

square

#337CA8 #9933A8 #A85F33 #41A833

split-complementary

#337CA8 #A83341 #A89933

monochromatic

#16374A #255979 #337CA8 #4F9BC9 #7EB6D8

Accessibility & contrast

On white

4.58

#337CA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#337CA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CA8

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CA8	#FFFFFF	#000000	##000000
##337CA8	1.00	4.58	4.59	4.59
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#677CAA

Deuteranopia (green-blind)

#5770A7

Tritanopia (blue-blind)

#00878B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337ca8;
/* rgb */ color: rgb(51, 124, 168);
/* oklch */ color: oklch(56.0% 0.099 238.7);

Tailwind

colors: {
  custom: {
    50: '#79a1c2',
    500: '#337ca8',
    950: '#000000',
  },
}

SCSS

$custom: #337ca8;
$custom-light: #79a1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#337ca8",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 168
  },
  "hsl": {
    "h": 202.564,
    "s": 53.425,
    "l": 42.941
  },
  "oklch": {
    "l": 0.56026,
    "c": 0.09907,
    "h": 238.7
  },
  "luminance": 0.17946
}

Semantic roles & 50–950 ramp

primary

#337CA8

secondary

#C19276

accent

#824BDD

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #337CA8

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

Preview Lab → · Contrast checker → · Palette generator →