#1F313D#1F313D

#1F313D is a dark, muted cyan. Relative luminance 0.028; OKLCH L 30.3% C 0.032 H 238.4°. Best body text is #FFFFFF at 13.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F313D
RGB	rgb(31, 49, 61)
HSL	hsl(204, 33%, 18%)
HSV	hsv(204, 49%, 24%)
CMYK	cmyk(49.2%, 19.7%, 0%, 76.1%)
CIE-LAB	lab(19.33, -3.47, -9.88)
CIE-LCH	lch(19.33, 10.47, 250.64°)
OKLab	oklab(30.31% -0.0168 -0.0273)
OKLCH	oklch(30.31% 0.032 238.4)
XYZ	xyz(2.5054, 2.8247, 4.8272)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F313D #3D2B1F

analogous

#1F3D3A #1F313D #1F223D

triadic

#1F313D #3D1F31 #313D1F

tetradic

#1F313D #3A1F3D #3D2B1F #223D1F

square

#1F313D #3A1F3D #3D2B1F #223D1F

split-complementary

#1F313D #3D1F22 #3D3A1F

monochromatic

#0A1014 #0A1014 #1F313D #345266 #48728E

Accessibility & contrast

On white

13.42

#1F313D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1F313D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F313D

13.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F313D	#FFFFFF	#000000	##FFFFFF
##1F313D	1.00	13.42	1.57	13.42
#FFFFFF	13.42	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C313E

Deuteranopia (green-blind)

#282D3D

Tritanopia (blue-blind)

#133435

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f313d;
/* rgb */ color: rgb(31, 49, 61);
/* oklch */ color: oklch(30.3% 0.032 238.4);

Tailwind

colors: {
  custom: {
    50: '#5c6972',
    500: '#1f313d',
    950: '#000000',
  },
}

SCSS

$custom: #1f313d;
$custom-light: #5c6972;
$custom-dark: #000000;

JSON

{
  "hex": "#1f313d",
  "rgb": {
    "r": 31,
    "g": 49,
    "b": 61
  },
  "hsl": {
    "h": 204,
    "s": 32.609,
    "l": 18.039
  },
  "oklch": {
    "l": 0.30308,
    "c": 0.03208,
    "h": 238.4
  },
  "luminance": 0.02825
}

Semantic roles & 50–950 ramp

primary

#1F313D

secondary

#715847

accent

#895FC9

background

#F5F6F6

surface

#E9EBEC

border

#C5C6C7

text

#040608

muted

#797A7B

Preview Lab

Preview with #1F313D

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

Preview Lab → · Contrast checker → · Palette generator →