#317BBF#317BBF

#317BBF is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.0% C 0.128 H 249.5°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#317BBF
RGB	rgb(49, 123, 191)
HSL	hsl(209, 59%, 47%)
HSV	hsv(209, 74%, 75%)
CMYK	cmyk(74.3%, 35.6%, 0%, 25.1%)
CIE-LAB	lab(50.19, 0.49, -42.14)
CIE-LCH	lch(50.19, 42.14, 270.67°)
OKLab	oklab(56.98% -0.0447 -0.1198)
OKLCH	oklch(56.98% 0.128 249.5)
XYZ	xyz(17.7500, 18.5784, 51.9306)
Luminance	0.1858 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#317BBF #BF7531

analogous

#31BFBC #317BBF #3134BF

triadic

#317BBF #BF317B #7BBF31

tetradic

#317BBF #BC31BF #BF7531 #34BF31

square

#317BBF #BC31BF #BF7531 #34BF31

split-complementary

#317BBF #BF3134 #BFBC31

monochromatic

#183C5E #255C8E #317BBF #5999D4 #8AB7E1

Accessibility & contrast

On white

4.45

#317BBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#317BBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #317BBF

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##317BBF	#FFFFFF	#000000	##000000
##317BBF	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7FC2

Deuteranopia (green-blind)

#4771BE

Tritanopia (blue-blind)

#008B94

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #317bbf;
/* rgb */ color: rgb(49, 123, 191);
/* oklch */ color: oklch(57.0% 0.128 249.5);

Tailwind

colors: {
  custom: {
    50: '#7ca0d2',
    500: '#317bbf',
    950: '#000000',
  },
}

SCSS

$custom: #317bbf;
$custom-light: #7ca0d2;
$custom-dark: #000000;

JSON

{
  "hex": "#317bbf",
  "rgb": {
    "r": 49,
    "g": 123,
    "b": 191
  },
  "hsl": {
    "h": 208.732,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.56978,
    "c": 0.12791,
    "h": 249.5
  },
  "luminance": 0.1858
}

Semantic roles & 50–950 ramp

primary

#317BBF

secondary

#CBA481

accent

#9145E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #317BBF

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

Preview Lab → · Contrast checker → · Palette generator →