#31718B#31718B

#31718B is a mid, moderate cyan. Relative luminance 0.143; OKLCH L 51.8% C 0.077 H 227.8°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#31718B
RGB	rgb(49, 113, 139)
HSL	hsl(197, 48%, 37%)
HSV	hsv(197, 65%, 55%)
CMYK	cmyk(64.7%, 18.7%, 0%, 45.5%)
CIE-LAB	lab(44.70, -11.98, -20.32)
CIE-LCH	lch(44.70, 23.59, 239.47°)
OKLab	oklab(51.83% -0.0515 -0.0567)
OKLCH	oklch(51.83% 0.077 227.8)
XYZ	xyz(11.8301, 14.3261, 26.5628)
Luminance	0.1433 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31718B #8B4B31

analogous

#318B78 #31718B #31448B

triadic

#31718B #8B3171 #718B31

tetradic

#31718B #78318B #8B4B31 #448B31

square

#31718B #78318B #8B4B31 #448B31

split-complementary

#31718B #8B3144 #8B7831

monochromatic

#112731 #214C5E #31718B #4196B8 #6BAFCB

Accessibility & contrast

On white

5.43

#31718B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#31718B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #31718B

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31718B	#FFFFFF	#000000	##FFFFFF
##31718B	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#636F8C

Deuteranopia (green-blind)

#57668B

Tritanopia (blue-blind)

#007879

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #31718b;
/* rgb */ color: rgb(49, 113, 139);
/* oklch */ color: oklch(51.8% 0.077 227.8);

Tailwind

colors: {
  custom: {
    50: '#7399ad',
    500: '#31718b',
    950: '#000000',
  },
}

SCSS

$custom: #31718b;
$custom-light: #7399ad;
$custom-dark: #000000;

JSON

{
  "hex": "#31718b",
  "rgb": {
    "r": 49,
    "g": 113,
    "b": 139
  },
  "hsl": {
    "h": 197.333,
    "s": 47.872,
    "l": 36.863
  },
  "oklch": {
    "l": 0.51827,
    "c": 0.07665,
    "h": 227.8
  },
  "luminance": 0.14327
}

Semantic roles & 50–950 ramp

primary

#31718B

secondary

#B27C65

accent

#7750D7

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#090E10

muted

#7B7E7F

Preview Lab

Preview with #31718B

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

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