#10173C#10173C

#10173C is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.3% C 0.071 H 271.4°. Best body text is #FFFFFF at 17.36:1 contrast (WCAG AA passes).

Color values

HEX	#10173C
RGB	rgb(16, 23, 60)
HSL	hsl(230, 58%, 15%)
HSV	hsv(230, 73%, 24%)
CMYK	cmyk(73.3%, 61.7%, 0%, 76.5%)
CIE-LAB	lab(9.39, 11.19, -24.88)
CIE-LCH	lch(9.39, 27.28, 294.22°)
OKLab	oklab(22.32% 0.0017 -0.0714)
OKLCH	oklch(22.32% 0.071 271.4)
XYZ	xyz(1.3354, 1.0491, 4.4062)
Luminance	0.0105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10173C #3C3510

analogous

#102D3C #10173C #1F103C

triadic

#10173C #3C1017 #173C10

tetradic

#10173C #3C102D #3C3510 #103C1F

square

#10173C #3C102D #3C3510 #103C1F

split-complementary

#10173C #3C1F10 #2D3C10

monochromatic

#060918 #060918 #10173C #1D2A6C #2A3C9D

Accessibility & contrast

On white

17.36

#10173C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#10173C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10173C

17.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10173C	#FFFFFF	#000000	##FFFFFF
##10173C	1.00	17.36	1.21	17.36
#FFFFFF	17.36	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#021C3D

Deuteranopia (green-blind)

#00183B

Tritanopia (blue-blind)

#002026

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #10173c;
/* rgb */ color: rgb(16, 23, 60);
/* oklch */ color: oklch(22.3% 0.071 271.4);

Tailwind

colors: {
  custom: {
    50: '#545372',
    500: '#10173c',
    950: '#000000',
  },
}

SCSS

$custom: #10173c;
$custom-light: #545372;
$custom-dark: #000000;

JSON

{
  "hex": "#10173c",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 60
  },
  "hsl": {
    "h": 230.455,
    "s": 57.895,
    "l": 14.902
  },
  "oklch": {
    "l": 0.22318,
    "c": 0.07145,
    "h": 271.4
  },
  "luminance": 0.01049
}

Semantic roles & 50–950 ramp

primary

#10173C

secondary

#766B32

accent

#C947E1

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030208

muted

#78787B

Preview Lab

Preview with #10173C

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

Preview Lab → · Contrast checker → · Palette generator →