#10174E#10174E

#10174E is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.1% C 0.100 H 271.0°. Best body text is #FFFFFF at 16.74:1 contrast (WCAG AA passes).

Color values

HEX	#10174E
RGB	rgb(16, 23, 78)
HSL	hsl(233, 66%, 18%)
HSV	hsv(233, 79%, 31%)
CMYK	cmyk(79.5%, 70.5%, 0%, 69.4%)
CIE-LAB	lab(11.08, 18.83, -34.75)
CIE-LCH	lch(11.08, 39.52, 298.46°)
OKLab	oklab(24.1% 0.0017 -0.1004)
OKLCH	oklch(24.1% 0.1 271)
XYZ	xyz(1.8948, 1.2728, 7.3521)
Luminance	0.0127 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10174E #4E4710

analogous

#10364E #10174E #28104E

triadic

#10174E #4E1017 #174E10

tetradic

#10174E #4E1036 #4E4710 #104E28

square

#10174E #4E1036 #4E4710 #104E28

split-complementary

#10174E #4E2810 #364E10

monochromatic

#050719 #06081B #10174E #1A2681 #2535B4

Accessibility & contrast

On white

16.74

#10174E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#10174E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10174E

16.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10174E	#FFFFFF	#000000	##FFFFFF
##10174E	1.00	16.74	1.25	16.74
#FFFFFF	16.74	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002150

Deuteranopia (green-blind)

#001B4D

Tritanopia (blue-blind)

#002530

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #10174e;
/* rgb */ color: rgb(16, 23, 78);
/* oklch */ color: oklch(24.1% 0.100 271.0);

Tailwind

colors: {
  custom: {
    50: '#595380',
    500: '#10174e',
    950: '#000000',
  },
}

SCSS

$custom: #10174e;
$custom-light: #595380;
$custom-dark: #000000;

JSON

{
  "hex": "#10174e",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 78
  },
  "hsl": {
    "h": 233.226,
    "s": 65.957,
    "l": 18.431
  },
  "oklch": {
    "l": 0.24101,
    "c": 0.10041,
    "h": 271
  },
  "luminance": 0.01273
}

Semantic roles & 50–950 ramp

primary

#10174E

secondary

#887E32

accent

#D63FE9

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #10174E

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

Preview Lab → · Contrast checker → · Palette generator →