#1F2139#1F2139

#1F2139 is a dark, muted blue. Relative luminance 0.017; OKLCH L 25.8% C 0.045 H 279.1°. Best body text is #FFFFFF at 15.73:1 contrast (WCAG AA passes).

Color values

HEX	#1F2139
RGB	rgb(31, 33, 57)
HSL	hsl(235, 30%, 17%)
HSV	hsv(235, 46%, 22%)
CMYK	cmyk(45.6%, 42.1%, 0%, 77.6%)
CIE-LAB	lab(13.68, 6.51, -15.85)
CIE-LCH	lch(13.68, 17.13, 292.35°)
OKLab	oklab(25.83% 0.0071 -0.0445)
OKLCH	oklch(25.83% 0.045 279.1)
XYZ	xyz(1.8472, 1.6744, 4.0960)
Luminance	0.0167 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2139 #39371F

analogous

#1F2E39 #1F2139 #2A1F39

triadic

#1F2139 #391F21 #21391F

tetradic

#1F2139 #391F2E #39371F #1F392A

square

#1F2139 #391F2E #39371F #1F392A

split-complementary

#1F2139 #392A1F #2E391F

monochromatic

#0B0B14 #0B0B14 #1F2139 #353861 #4A4F88

Accessibility & contrast

On white

15.73

#1F2139 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#1F2139 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2139

15.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2139	#FFFFFF	#000000	##FFFFFF
##1F2139	1.00	15.73	1.33	15.73
#FFFFFF	15.73	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19243A

Deuteranopia (green-blind)

#172238

Tritanopia (blue-blind)

#17262A

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #1f2139;
/* rgb */ color: rgb(31, 33, 57);
/* oklch */ color: oklch(25.8% 0.045 279.1);

Tailwind

colors: {
  custom: {
    50: '#5c5c6f',
    500: '#1f2139',
    950: '#000000',
  },
}

SCSS

$custom: #1f2139;
$custom-light: #5c5c6f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2139",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 57
  },
  "hsl": {
    "h": 235.385,
    "s": 29.545,
    "l": 17.255
  },
  "oklch": {
    "l": 0.25828,
    "c": 0.04502,
    "h": 279.1
  },
  "luminance": 0.01674
}

Semantic roles & 50–950 ramp

primary

#1F2139

secondary

#6C6A47

accent

#BE62C6

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#040407

muted

#79797A

Preview Lab

Preview with #1F2139

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

Preview Lab → · Contrast checker → · Palette generator →