#10143F#10143F

#10143F is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.9% C 0.081 H 273.6°. Best body text is #FFFFFF at 17.59:1 contrast (WCAG AA passes).

Color values

HEX	#10143F
RGB	rgb(16, 20, 63)
HSL	hsl(235, 59%, 15%)
HSV	hsv(235, 75%, 25%)
CMYK	cmyk(74.6%, 68.3%, 0%, 75.3%)
CIE-LAB	lab(8.73, 14.80, -28.09)
CIE-LCH	lch(8.73, 31.75, 297.79°)
OKLab	oklab(21.91% 0.0051 -0.0809)
OKLCH	oklch(21.91% 0.081 273.6)
XYZ	xyz(1.3607, 0.9692, 4.8170)
Luminance	0.0097 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10143F #3F3B10

analogous

#102B3F #10143F #23103F

triadic

#10143F #3F1014 #143F10

tetradic

#10143F #3F102B #3F3B10 #103F23

square

#10143F #3F102B #3F3B10 #103F23

split-complementary

#10143F #3F2310 #2B3F10

monochromatic

#060818 #060818 #10143F #1C2370 #2933A1

Accessibility & contrast

On white

17.59

#10143F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#10143F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10143F

17.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10143F	#FFFFFF	#000000	##FFFFFF
##10143F	1.00	17.59	1.19	17.59
#FFFFFF	17.59	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B40

Deuteranopia (green-blind)

#00173E

Tritanopia (blue-blind)

#001F27

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #10143f;
/* rgb */ color: rgb(16, 20, 63);
/* oklch */ color: oklch(21.9% 0.081 273.6);

Tailwind

colors: {
  custom: {
    50: '#555174',
    500: '#10143f',
    950: '#000000',
  },
}

SCSS

$custom: #10143f;
$custom-light: #555174;
$custom-dark: #000000;

JSON

{
  "hex": "#10143f",
  "rgb": {
    "r": 16,
    "g": 20,
    "b": 63
  },
  "hsl": {
    "h": 234.894,
    "s": 59.494,
    "l": 15.49
  },
  "oklch": {
    "l": 0.21909,
    "c": 0.08108,
    "h": 273.6
  },
  "luminance": 0.00969
}

Semantic roles & 50–950 ramp

primary

#10143F

secondary

#797332

accent

#D545E3

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #10143F

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

Preview Lab → · Contrast checker → · Palette generator →