#10173D#10173D

#10173D is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.4% C 0.073 H 271.4°. Best body text is #FFFFFF at 17.33:1 contrast (WCAG AA passes).

Color values

HEX	#10173D
RGB	rgb(16, 23, 61)
HSL	hsl(231, 58%, 15%)
HSV	hsv(231, 74%, 24%)
CMYK	cmyk(73.8%, 62.3%, 0%, 76.1%)
CIE-LAB	lab(9.48, 11.62, -25.46)
CIE-LCH	lch(9.48, 27.98, 294.54°)
OKLab	oklab(22.41% 0.0018 -0.0731)
OKLCH	oklch(22.41% 0.073 271.4)
XYZ	xyz(1.3621, 1.0598, 4.5467)
Luminance	0.0106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10173D #3D3610

analogous

#102D3D #10173D #20103D

triadic

#10173D #3D1017 #173D10

tetradic

#10173D #3D102D #3D3610 #103D20

square

#10173D #3D102D #3D3610 #103D20

split-complementary

#10173D #3D2010 #2D3D10

monochromatic

#060918 #060918 #10173D #1D296D #293C9E

Accessibility & contrast

On white

17.33

#10173D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#10173D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10173D

17.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10173D	#FFFFFF	#000000	##FFFFFF
##10173D	1.00	17.33	1.21	17.33
#FFFFFF	17.33	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011D3E

Deuteranopia (green-blind)

#00193C

Tritanopia (blue-blind)

#002027

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #10173d;
/* rgb */ color: rgb(16, 23, 61);
/* oklch */ color: oklch(22.4% 0.073 271.4);

Tailwind

colors: {
  custom: {
    50: '#545373',
    500: '#10173d',
    950: '#000000',
  },
}

SCSS

$custom: #10173d;
$custom-light: #545373;
$custom-dark: #000000;

JSON

{
  "hex": "#10173d",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 61
  },
  "hsl": {
    "h": 230.667,
    "s": 58.442,
    "l": 15.098
  },
  "oklch": {
    "l": 0.22409,
    "c": 0.07314,
    "h": 271.4
  },
  "luminance": 0.0106
}

Semantic roles & 50–950 ramp

primary

#10173D

secondary

#776C32

accent

#C946E2

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #10173D

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

Preview Lab → · Contrast checker → · Palette generator →