#10172D#10172D

#10172D is a very dark, muted blue. Relative luminance 0.009; OKLCH L 21.1% C 0.045 H 269.0°. Best body text is #FFFFFF at 17.76:1 contrast (WCAG AA passes).

Color values

HEX	#10172D
RGB	rgb(16, 23, 45)
HSL	hsl(226, 48%, 12%)
HSV	hsv(226, 64%, 18%)
CMYK	cmyk(64.4%, 48.9%, 0%, 82.4%)
CIE-LAB	lab(8.24, 4.85, -15.85)
CIE-LCH	lch(8.24, 16.57, 287.02°)
OKLab	oklab(21.07% -0.0008 -0.0449)
OKLCH	oklch(21.07% 0.045 269)
XYZ	xyz(0.9936, 0.9123, 2.6059)
Luminance	0.0091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10172D #2D2610

analogous

#10262D #10172D #18102D

triadic

#10172D #2D1017 #172D10

tetradic

#10172D #2D1026 #2D2610 #102D18

square

#10172D #2D1026 #2D2610 #102D18

split-complementary

#10172D #2D1810 #262D10

monochromatic

#080C17 #080C17 #10172D #202E5A #304587

Accessibility & contrast

On white

17.76

#10172D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#10172D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10172D

17.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10172D	#FFFFFF	#000000	##FFFFFF
##10172D	1.00	17.76	1.18	17.76
#FFFFFF	17.76	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E192E

Deuteranopia (green-blind)

#0B172D

Tritanopia (blue-blind)

#041C1F

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #10172d;
/* rgb */ color: rgb(16, 23, 45);
/* oklch */ color: oklch(21.1% 0.045 269.0);

Tailwind

colors: {
  custom: {
    50: '#515366',
    500: '#10172d',
    950: '#000000',
  },
}

SCSS

$custom: #10172d;
$custom-light: #515366;
$custom-dark: #000000;

JSON

{
  "hex": "#10172d",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 45
  },
  "hsl": {
    "h": 225.517,
    "s": 47.541,
    "l": 11.961
  },
  "oklch": {
    "l": 0.21067,
    "c": 0.0449,
    "h": 269
  },
  "luminance": 0.00912
}

Semantic roles & 50–950 ramp

primary

#10172D

secondary

#665A33

accent

#B751D7

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020206

muted

#78787A

Preview Lab

Preview with #10172D

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

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