#0A0540#0A0540

#0A0540 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.7% C 0.104 H 274.0°. Best body text is #FFFFFF at 18.94:1 contrast (WCAG AA passes).

Color values

HEX	#0A0540
RGB	rgb(10, 5, 64)
HSL	hsl(245, 86%, 14%)
HSV	hsv(245, 92%, 25%)
CMYK	cmyk(84.4%, 92.2%, 0%, 74.9%)
CIE-LAB	lab(4.91, 23.14, -35.08)
CIE-LCH	lch(4.91, 42.02, 303.42°)
OKLab	oklab(18.71% 0.0073 -0.104)
OKLCH	oklch(18.71% 0.104 274)
XYZ	xyz(1.1046, 0.5431, 4.8961)
Luminance	0.0054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 2.19

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0540 #3B4005

analogous

#051D40 #0A0540 #270540

triadic

#0A0540 #400A05 #05400A

tetradic

#0A0540 #40051D #3B4005 #054027

square

#0A0540 #40051D #3B4005 #054027

split-complementary

#0A0540 #402705 #1D4005

monochromatic

#04021C #04021C #0A0540 #130979 #1C0EB2

Accessibility & contrast

On white

18.94

#0A0540 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#0A0540 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0540

18.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0540	#FFFFFF	#000000	##FFFFFF
##0A0540	1.00	18.94	1.11	18.94
#FFFFFF	18.94	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001342

Deuteranopia (green-blind)

#000E3F

Tritanopia (blue-blind)

#001723

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #0a0540;
/* rgb */ color: rgb(10, 5, 64);
/* oklch */ color: oklch(18.7% 0.104 274.0);

Tailwind

colors: {
  custom: {
    50: '#544776',
    500: '#0a0540',
    950: '#000000',
  },
}

SCSS

$custom: #0a0540;
$custom-light: #544776;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0540",
  "rgb": {
    "r": 10,
    "g": 5,
    "b": 64
  },
  "hsl": {
    "h": 245.085,
    "s": 85.507,
    "l": 13.529
  },
  "oklch": {
    "l": 0.18707,
    "c": 0.10426,
    "h": 274
  },
  "luminance": 0.00543
}

Semantic roles & 50–950 ramp

primary

#0A0540

secondary

#788120

accent

#FC2CEA

background

#F5F4F7

surface

#E9E6ED

border

#C5C2C8

text

#030008

muted

#78777B

Preview Lab

Preview with #0A0540

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

Preview Lab → · Contrast checker → · Palette generator →