#10174D#10174D

#10174D is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.0% C 0.099 H 271.0°. Best body text is #FFFFFF at 16.78:1 contrast (WCAG AA passes).

Color values

HEX	#10174D
RGB	rgb(16, 23, 77)
HSL	hsl(233, 66%, 18%)
HSV	hsv(233, 79%, 30%)
CMYK	cmyk(79.2%, 70.1%, 0%, 69.8%)
CIE-LAB	lab(10.98, 18.41, -34.22)
CIE-LCH	lch(10.98, 38.86, 298.29°)
OKLab	oklab(24% 0.0018 -0.0989)
OKLCH	oklch(24% 0.099 271)
XYZ	xyz(1.8592, 1.2586, 7.1647)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10174D #4D4610

analogous

#10354D #10174D #27104D

triadic

#10174D #4D1017 #174D10

tetradic

#10174D #4D1035 #4D4610 #104D27

square

#10174D #4D1035 #4D4610 #104D27

split-complementary

#10174D #4D2710 #354D10

monochromatic

#050819 #05081A #10174D #1B2680 #2535B2

Accessibility & contrast

On white

16.78

#10174D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#10174D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10174D

16.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10174D	#FFFFFF	#000000	##FFFFFF
##10174D	1.00	16.78	1.25	16.78
#FFFFFF	16.78	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00204F

Deuteranopia (green-blind)

#001B4C

Tritanopia (blue-blind)

#00252F

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #10174d;
/* rgb */ color: rgb(16, 23, 77);
/* oklch */ color: oklch(24.0% 0.099 271.0);

Tailwind

colors: {
  custom: {
    50: '#59537f',
    500: '#10174d',
    950: '#000000',
  },
}

SCSS

$custom: #10174d;
$custom-light: #59537f;
$custom-dark: #000000;

JSON

{
  "hex": "#10174d",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 77
  },
  "hsl": {
    "h": 233.115,
    "s": 65.591,
    "l": 18.235
  },
  "oklch": {
    "l": 0.23995,
    "c": 0.09889,
    "h": 271
  },
  "luminance": 0.01259
}

Semantic roles & 50–950 ramp

primary

#10174D

secondary

#877D32

accent

#D53FE9

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #10174D

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

Preview Lab → · Contrast checker → · Palette generator →