#10172F#10172F

#10172F is a very dark, muted blue. Relative luminance 0.009; OKLCH L 21.2% C 0.049 H 269.7°. Best body text is #FFFFFF at 17.71:1 contrast (WCAG AA passes).

Color values

HEX	#10172F
RGB	rgb(16, 23, 47)
HSL	hsl(226, 49%, 12%)
HSV	hsv(226, 66%, 18%)
CMYK	cmyk(66%, 51.1%, 0%, 81.6%)
CIE-LAB	lab(8.38, 5.68, -17.10)
CIE-LCH	lch(8.38, 18.02, 288.37°)
OKLab	oklab(21.22% -0.0003 -0.0486)
OKLCH	oklch(21.22% 0.049 269.7)
XYZ	xyz(1.0330, 0.9281, 2.8135)
Luminance	0.0093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10172F #2F2810

analogous

#10262F #10172F #19102F

triadic

#10172F #2F1017 #172F10

tetradic

#10172F #2F1026 #2F2810 #102F19

square

#10172F #2F1026 #2F2810 #102F19

split-complementary

#10172F #2F1910 #262F10

monochromatic

#080B17 #080B17 #10172F #202D5D #2F448A

Accessibility & contrast

On white

17.71

#10172F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#10172F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10172F

17.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10172F	#FFFFFF	#000000	##FFFFFF
##10172F	1.00	17.71	1.19	17.71
#FFFFFF	17.71	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D1A30

Deuteranopia (green-blind)

#09172E

Tritanopia (blue-blind)

#031C20

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #10172f;
/* rgb */ color: rgb(16, 23, 47);
/* oklch */ color: oklch(21.2% 0.049 269.7);

Tailwind

colors: {
  custom: {
    50: '#515367',
    500: '#10172f',
    950: '#000000',
  },
}

SCSS

$custom: #10172f;
$custom-light: #515367;
$custom-dark: #000000;

JSON

{
  "hex": "#10172f",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 47
  },
  "hsl": {
    "h": 226.452,
    "s": 49.206,
    "l": 12.353
  },
  "oklch": {
    "l": 0.21219,
    "c": 0.04855,
    "h": 269.7
  },
  "luminance": 0.00928
}

Semantic roles & 50–950 ramp

primary

#10172F

secondary

#685C33

accent

#BA4FD9

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020206

muted

#78787A

Preview Lab

Preview with #10172F

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

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