#0A153D#0A153D

#0A153D is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.5% C 0.078 H 267.6°. Best body text is #FFFFFF at 17.68:1 contrast (WCAG AA passes).

Color values

HEX	#0A153D
RGB	rgb(10, 21, 61)
HSL	hsl(227, 72%, 14%)
HSV	hsv(227, 84%, 24%)
CMYK	cmyk(83.6%, 65.6%, 0%, 76.1%)
CIE-LAB	lab(8.46, 12.12, -27.13)
CIE-LCH	lch(8.46, 29.71, 294.08°)
OKLab	oklab(21.54% -0.0033 -0.0782)
OKLCH	oklch(21.54% 0.078 267.6)
XYZ	xyz(1.2354, 0.9377, 4.5299)
Luminance	0.0094 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A153D #3D320A

analogous

#0A2F3D #0A153D #190A3D

triadic

#0A153D #3D0A15 #153D0A

tetradic

#0A153D #3D0A2F #3D320A #0A3D19

square

#0A153D #3D0A2F #3D320A #0A3D19

split-complementary

#0A153D #3D190A #2F3D0A

monochromatic

#04091A #04091A #0A153D #132772 #1B39A6

Accessibility & contrast

On white

17.68

#0A153D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#0A153D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A153D

17.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A153D	#FFFFFF	#000000	##FFFFFF
##0A153D	1.00	17.68	1.19	17.68
#FFFFFF	17.68	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B3E

Deuteranopia (green-blind)

#00163C

Tritanopia (blue-blind)

#001F26

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #0a153d;
/* rgb */ color: rgb(10, 21, 61);
/* oklch */ color: oklch(21.5% 0.078 267.6);

Tailwind

colors: {
  custom: {
    50: '#525173',
    500: '#0a153d',
    950: '#000000',
  },
}

SCSS

$custom: #0a153d;
$custom-light: #525173;
$custom-dark: #000000;

JSON

{
  "hex": "#0a153d",
  "rgb": {
    "r": 10,
    "g": 21,
    "b": 61
  },
  "hsl": {
    "h": 227.059,
    "s": 71.831,
    "l": 13.922
  },
  "oklch": {
    "l": 0.21542,
    "c": 0.0783,
    "h": 267.6
  },
  "luminance": 0.00938
}

Semantic roles & 50–950 ramp

primary

#0A153D

secondary

#7A6928

accent

#C739EF

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0A153D

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

Preview Lab → · Contrast checker → · Palette generator →