#337FB0#337FB0

#337FB0 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.2% C 0.106 H 240.6°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#337FB0
RGB	rgb(51, 127, 176)
HSL	hsl(204, 55%, 45%)
HSV	hsv(204, 71%, 69%)
CMYK	cmyk(71%, 27.8%, 0%, 31%)
CIE-LAB	lab(50.71, -6.98, -32.69)
CIE-LCH	lch(50.71, 33.43, 257.94°)
OKLab	oklab(57.16% -0.0519 -0.0922)
OKLCH	oklch(57.16% 0.106 240.6)
XYZ	xyz(16.7881, 19.0153, 43.8514)
Luminance	0.1902 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FB0 #B06433

analogous

#33B0A3 #337FB0 #3341B0

triadic

#337FB0 #B0337F #7FB033

tetradic

#337FB0 #A333B0 #B06433 #41B033

square

#337FB0 #A333B0 #B06433 #41B033

split-complementary

#337FB0 #B03341 #B0A333

monochromatic

#183B51 #255D81 #337FB0 #539DCD #82B8DB

Accessibility & contrast

On white

4.37

#337FB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#337FB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FB0

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FB0	#FFFFFF	#000000	##000000
##337FB0	1.00	4.37	4.80	4.80
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#687FB2

Deuteranopia (green-blind)

#5773AF

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337fb0;
/* rgb */ color: rgb(51, 127, 176);
/* oklch */ color: oklch(57.2% 0.106 240.6);

Tailwind

colors: {
  custom: {
    50: '#7aa4c8',
    500: '#337fb0',
    950: '#000000',
  },
}

SCSS

$custom: #337fb0;
$custom-light: #7aa4c8;
$custom-dark: #000000;

JSON

{
  "hex": "#337fb0",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 176
  },
  "hsl": {
    "h": 203.52,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.57158,
    "c": 0.10584,
    "h": 240.6
  },
  "luminance": 0.19017
}

Semantic roles & 50–950 ramp

primary

#337FB0

secondary

#C4977B

accent

#8449DE

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #337FB0

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

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