#0A153F#0A153F

#0A153F is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.7% C 0.082 H 267.8°. Best body text is #FFFFFF at 17.62:1 contrast (WCAG AA passes).

Color values

HEX	#0A153F
RGB	rgb(10, 21, 63)
HSL	hsl(228, 73%, 14%)
HSV	hsv(228, 84%, 25%)
CMYK	cmyk(84.1%, 66.7%, 0%, 75.3%)
CIE-LAB	lab(8.65, 13.02, -28.24)
CIE-LCH	lch(8.65, 31.10, 294.75°)
OKLab	oklab(21.74% -0.0032 -0.0815)
OKLCH	oklch(21.74% 0.082 267.8)
XYZ	xyz(1.2902, 0.9596, 4.8189)
Luminance	0.0096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A153F #3F340A

analogous

#0A303F #0A153F #1A0A3F

triadic

#0A153F #3F0A15 #153F0A

tetradic

#0A153F #3F0A30 #3F340A #0A3F1A

square

#0A153F #3F0A30 #3F340A #0A3F1A

split-complementary

#0A153F #3F1A0A #303F0A

monochromatic

#04091A #04091A #0A153F #122774 #1B38A9

Accessibility & contrast

On white

17.62

#0A153F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#0A153F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A153F

17.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A153F	#FFFFFF	#000000	##FFFFFF
##0A153F	1.00	17.62	1.19	17.62
#FFFFFF	17.62	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B40

Deuteranopia (green-blind)

#00163E

Tritanopia (blue-blind)

#002027

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #0a153f;
/* rgb */ color: rgb(10, 21, 63);
/* oklch */ color: oklch(21.7% 0.082 267.8);

Tailwind

colors: {
  custom: {
    50: '#535174',
    500: '#0a153f',
    950: '#000000',
  },
}

SCSS

$custom: #0a153f;
$custom-light: #535174;
$custom-dark: #000000;

JSON

{
  "hex": "#0a153f",
  "rgb": {
    "r": 10,
    "g": 21,
    "b": 63
  },
  "hsl": {
    "h": 227.547,
    "s": 72.603,
    "l": 14.314
  },
  "oklch": {
    "l": 0.21743,
    "c": 0.08157,
    "h": 267.8
  },
  "luminance": 0.0096
}

Semantic roles & 50–950 ramp

primary

#0A153F

secondary

#7C6B29

accent

#C938EF

background

#F4F4F7

surface

#E8E7ED

border

#C4C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0A153F

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

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