#10143B#10143B

#10143B is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.5% C 0.074 H 273.9°. Best body text is #FFFFFF at 17.72:1 contrast (WCAG AA passes).

Color values

HEX	#10143B
RGB	rgb(16, 20, 59)
HSL	hsl(234, 57%, 15%)
HSV	hsv(234, 73%, 23%)
CMYK	cmyk(72.9%, 66.1%, 0%, 76.9%)
CIE-LAB	lab(8.36, 13.12, -25.84)
CIE-LCH	lch(8.36, 28.98, 296.91°)
OKLab	oklab(21.52% 0.0051 -0.0743)
OKLCH	oklch(21.52% 0.074 273.9)
XYZ	xyz(1.2530, 0.9261, 4.2496)
Luminance	0.0093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10143B #3B3710

analogous

#102A3B #10143B #22103B

triadic

#10143B #3B1014 #143B10

tetradic

#10143B #3B102A #3B3710 #103B22

square

#10143B #3B102A #3B3710 #103B22

split-complementary

#10143B #3B2210 #2A3B10

monochromatic

#070818 #070818 #10143B #1D246B #2A359B

Accessibility & contrast

On white

17.72

#10143B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#10143B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10143B

17.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10143B	#FFFFFF	#000000	##FFFFFF
##10143B	1.00	17.72	1.19	17.72
#FFFFFF	17.72	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A3C

Deuteranopia (green-blind)

#00163A

Tritanopia (blue-blind)

#001D25

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #10143b;
/* rgb */ color: rgb(16, 20, 59);
/* oklch */ color: oklch(21.5% 0.074 273.9);

Tailwind

colors: {
  custom: {
    50: '#545171',
    500: '#10143b',
    950: '#000000',
  },
}

SCSS

$custom: #10143b;
$custom-light: #545171;
$custom-dark: #000000;

JSON

{
  "hex": "#10143b",
  "rgb": {
    "r": 16,
    "g": 20,
    "b": 59
  },
  "hsl": {
    "h": 234.419,
    "s": 57.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.21516,
    "c": 0.07446,
    "h": 273.9
  },
  "luminance": 0.00926
}

Semantic roles & 50–950 ramp

primary

#10143B

secondary

#756F32

accent

#D247E1

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030208

muted

#78787B

Preview Lab

Preview with #10143B

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

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