#0A153A#0A153A

#0A153A is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.2% C 0.073 H 267.3°. Best body text is #FFFFFF at 17.78:1 contrast (WCAG AA passes).

Color values

HEX	#0A153A
RGB	rgb(10, 21, 58)
HSL	hsl(226, 71%, 13%)
HSV	hsv(226, 83%, 23%)
CMYK	cmyk(82.8%, 63.8%, 0%, 77.3%)
CIE-LAB	lab(8.18, 10.77, -25.43)
CIE-LCH	lch(8.18, 27.61, 292.96°)
OKLab	oklab(21.25% -0.0035 -0.0732)
OKLCH	oklch(21.25% 0.073 267.3)
XYZ	xyz(1.1568, 0.9062, 4.1161)
Luminance	0.0091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A153A #3A2F0A

analogous

#0A2D3A #0A153A #170A3A

triadic

#0A153A #3A0A15 #153A0A

tetradic

#0A153A #3A0A2D #3A2F0A #0A3A17

square

#0A153A #3A0A2D #3A2F0A #0A3A17

split-complementary

#0A153A #3A170A #2D3A0A

monochromatic

#05091A #05091A #0A153A #13286E #1C3BA2

Accessibility & contrast

On white

17.78

#0A153A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#0A153A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A153A

17.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A153A	#FFFFFF	#000000	##FFFFFF
##0A153A	1.00	17.78	1.18	17.78
#FFFFFF	17.78	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A3B

Deuteranopia (green-blind)

#001639

Tritanopia (blue-blind)

#001E24

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #0a153a;
/* rgb */ color: rgb(10, 21, 58);
/* oklch */ color: oklch(21.2% 0.073 267.3);

Tailwind

colors: {
  custom: {
    50: '#515170',
    500: '#0a153a',
    950: '#000000',
  },
}

SCSS

$custom: #0a153a;
$custom-light: #515170;
$custom-dark: #000000;

JSON

{
  "hex": "#0a153a",
  "rgb": {
    "r": 10,
    "g": 21,
    "b": 58
  },
  "hsl": {
    "h": 226.25,
    "s": 70.588,
    "l": 13.333
  },
  "oklch": {
    "l": 0.21248,
    "c": 0.07331,
    "h": 267.3
  },
  "luminance": 0.00906
}

Semantic roles & 50–950 ramp

primary

#0A153A

secondary

#776528

accent

#C43AED

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #0A153A

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

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