#317BB5#317BB5

#317BB5 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.4% C 0.116 H 245.7°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#317BB5
RGB	rgb(49, 123, 181)
HSL	hsl(206, 57%, 45%)
HSV	hsv(206, 73%, 71%)
CMYK	cmyk(72.9%, 32%, 0%, 29%)
CIE-LAB	lab(49.68, -3.14, -37.19)
CIE-LCH	lch(49.68, 37.32, 265.18°)
OKLab	oklab(56.41% -0.0475 -0.1054)
OKLCH	oklch(56.41% 0.116 245.7)
XYZ	xyz(16.6869, 18.1532, 46.3316)
Luminance	0.1815 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#317BB5 #B56B31

analogous

#31B5AD #317BB5 #3139B5

triadic

#317BB5 #B5317B #7BB531

tetradic

#317BB5 #AD31B5 #B56B31 #39B531

square

#317BB5 #AD31B5 #B56B31 #39B531

split-complementary

#317BB5 #B53139 #B5AD31

monochromatic

#173A55 #245A85 #317BB5 #5399D0 #83B6DD

Accessibility & contrast

On white

4.53

#317BB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#317BB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #317BB5

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##317BB5	#FFFFFF	#000000	##000000
##317BB5	1.00	4.53	4.63	4.63
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617DB8

Deuteranopia (green-blind)

#4E71B4

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #317bb5;
/* rgb */ color: rgb(49, 123, 181);
/* oklch */ color: oklch(56.4% 0.116 245.7);

Tailwind

colors: {
  custom: {
    50: '#7aa0cb',
    500: '#317bb5',
    950: '#000000',
  },
}

SCSS

$custom: #317bb5;
$custom-light: #7aa0cb;
$custom-dark: #000000;

JSON

{
  "hex": "#317bb5",
  "rgb": {
    "r": 49,
    "g": 123,
    "b": 181
  },
  "hsl": {
    "h": 206.364,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.56411,
    "c": 0.11562,
    "h": 245.7
  },
  "luminance": 0.18155
}

Semantic roles & 50–950 ramp

primary

#317BB5

secondary

#C79C7B

accent

#8B47E1

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #317BB5

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

Preview Lab → · Contrast checker → · Palette generator →