#0A153C#0A153C

#0A153C is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.4% C 0.077 H 267.5°. Best body text is #FFFFFF at 17.72:1 contrast (WCAG AA passes).

Color values

HEX	#0A153C
RGB	rgb(10, 21, 60)
HSL	hsl(227, 71%, 14%)
HSV	hsv(227, 83%, 24%)
CMYK	cmyk(83.3%, 65%, 0%, 76.5%)
CIE-LAB	lab(8.37, 11.67, -26.56)
CIE-LCH	lch(8.37, 29.01, 293.72°)
OKLab	oklab(21.44% -0.0033 -0.0766)
OKLCH	oklch(21.44% 0.077 267.5)
XYZ	xyz(1.2087, 0.9270, 4.3893)
Luminance	0.0093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A153C #3C310A

analogous

#0A2E3C #0A153C #180A3C

triadic

#0A153C #3C0A15 #153C0A

tetradic

#0A153C #3C0A2E #3C310A #0A3C18

square

#0A153C #3C0A2E #3C310A #0A3C18

split-complementary

#0A153C #3C180A #2E3C0A

monochromatic

#04091A #04091A #0A153C #132770 #1B3AA5

Accessibility & contrast

On white

17.72

#0A153C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#0A153C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A153C

17.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A153C	#FFFFFF	#000000	##FFFFFF
##0A153C	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)

#001B3D

Deuteranopia (green-blind)

#00163B

Tritanopia (blue-blind)

#001F25

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #0a153c;
/* rgb */ color: rgb(10, 21, 60);
/* oklch */ color: oklch(21.4% 0.077 267.5);

Tailwind

colors: {
  custom: {
    50: '#525172',
    500: '#0a153c',
    950: '#000000',
  },
}

SCSS

$custom: #0a153c;
$custom-light: #525172;
$custom-dark: #000000;

JSON

{
  "hex": "#0a153c",
  "rgb": {
    "r": 10,
    "g": 21,
    "b": 60
  },
  "hsl": {
    "h": 226.8,
    "s": 71.429,
    "l": 13.725
  },
  "oklch": {
    "l": 0.21443,
    "c": 0.07664,
    "h": 267.5
  },
  "luminance": 0.00927
}

Semantic roles & 50–950 ramp

primary

#0A153C

secondary

#796828

accent

#C63AEE

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020208

muted

#78787B

Preview Lab

Preview with #0A153C

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

Preview Lab → · Contrast checker → · Palette generator →