#3170B3#3170B3

#3170B3 is a mid, vivid cyan. Relative luminance 0.155; OKLCH L 53.7% C 0.124 H 252.4°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#3170B3
RGB	rgb(49, 112, 179)
HSL	hsl(211, 57%, 45%)
HSV	hsv(211, 73%, 70%)
CMYK	cmyk(72.6%, 37.4%, 0%, 29.8%)
CIE-LAB	lab(46.30, 2.81, -41.37)
CIE-LCH	lch(46.30, 41.46, 273.89°)
OKLab	oklab(53.72% -0.0375 -0.1177)
OKLCH	oklch(53.72% 0.124 252.4)
XYZ	xyz(15.1944, 15.4943, 44.8290)
Luminance	0.1550 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3170B3 #B37431

analogous

#31B1B3 #3170B3 #3331B3

triadic

#3170B3 #B33170 #70B331

tetradic

#3170B3 #B331B1 #B37431 #31B333

square

#3170B3 #B331B1 #B37431 #31B333

split-complementary

#3170B3 #B33331 #B1B331

monochromatic

#173453 #245283 #3170B3 #528FD0 #82AEDD

Accessibility & contrast

On white

5.12

#3170B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#3170B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3170B3

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3170B3	#FFFFFF	#000000	##FFFFFF
##3170B3	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5174B6

Deuteranopia (green-blind)

#3E68B2

Tritanopia (blue-blind)

#008089

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3170b3;
/* rgb */ color: rgb(49, 112, 179);
/* oklch */ color: oklch(53.7% 0.124 252.4);

Tailwind

colors: {
  custom: {
    50: '#7a98ca',
    500: '#3170b3',
    950: '#000000',
  },
}

SCSS

$custom: #3170b3;
$custom-light: #7a98ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3170b3",
  "rgb": {
    "r": 49,
    "g": 112,
    "b": 179
  },
  "hsl": {
    "h": 210.923,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.53724,
    "c": 0.12357,
    "h": 252.4
  },
  "luminance": 0.15496
}

Semantic roles & 50–950 ramp

primary

#3170B3

secondary

#C6A17A

accent

#9648E0

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #3170B3

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

Preview Lab → · Contrast checker → · Palette generator →