#10174A#10174A

#10174A is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.7% C 0.094 H 271.2°. Best body text is #FFFFFF at 16.89:1 contrast (WCAG AA passes).

Color values

HEX	#10174A
RGB	rgb(16, 23, 74)
HSL	hsl(233, 64%, 18%)
HSV	hsv(233, 78%, 29%)
CMYK	cmyk(78.4%, 68.9%, 0%, 71%)
CIE-LAB	lab(10.68, 17.16, -32.64)
CIE-LCH	lch(10.68, 36.87, 297.73°)
OKLab	oklab(23.68% 0.0019 -0.0942)
OKLCH	oklch(23.68% 0.094 271.2)
XYZ	xyz(1.7557, 1.2172, 6.6197)
Luminance	0.0122 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10174A #4A4310

analogous

#10344A #10174A #26104A

triadic

#10174A #4A1017 #174A10

tetradic

#10174A #4A1034 #4A4310 #104A26

square

#10174A #4A1034 #4A4310 #104A26

split-complementary

#10174A #4A2610 #344A10

monochromatic

#050819 #050819 #10174A #1B277C #2636AF

Accessibility & contrast

On white

16.89

#10174A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#10174A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10174A

16.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10174A	#FFFFFF	#000000	##FFFFFF
##10174A	1.00	16.89	1.24	16.89
#FFFFFF	16.89	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00204C

Deuteranopia (green-blind)

#001A49

Tritanopia (blue-blind)

#00242D

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #10174a;
/* rgb */ color: rgb(16, 23, 74);
/* oklch */ color: oklch(23.7% 0.094 271.2);

Tailwind

colors: {
  custom: {
    50: '#58537d',
    500: '#10174a',
    950: '#000000',
  },
}

SCSS

$custom: #10174a;
$custom-light: #58537d;
$custom-dark: #000000;

JSON

{
  "hex": "#10174a",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 74
  },
  "hsl": {
    "h": 232.759,
    "s": 64.444,
    "l": 17.647
  },
  "oklch": {
    "l": 0.23682,
    "c": 0.09424,
    "h": 271.2
  },
  "luminance": 0.01217
}

Semantic roles & 50–950 ramp

primary

#10174A

secondary

#847A32

accent

#D340E7

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #10174A

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

Preview Lab → · Contrast checker → · Palette generator →