#0A0737#0A0737

#0A0737 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.9% C 0.089 H 275.6°. Best body text is #FFFFFF at 19.12:1 contrast (WCAG AA passes).

Color values

HEX	#0A0737
RGB	rgb(10, 7, 55)
HSL	hsl(244, 77%, 12%)
HSV	hsv(244, 87%, 22%)
CMYK	cmyk(81.8%, 87.3%, 0%, 78.4%)
CIE-LAB	lab(4.45, 17.28, -29.30)
CIE-LCH	lch(4.45, 34.02, 300.52°)
OKLab	oklab(17.89% 0.0087 -0.0883)
OKLCH	oklch(17.89% 0.089 275.6)
XYZ	xyz(0.8905, 0.4922, 3.6618)
Luminance	0.0049 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0737 #343707

analogous

#071C37 #0A0737 #220737

triadic

#0A0737 #370A07 #07370A

tetradic

#0A0737 #37071C #343707 #073722

square

#0A0737 #37071C #343707 #073722

split-complementary

#0A0737 #372207 #1C3707

monochromatic

#05031B #05031B #0A0737 #140E6D #1E15A4

Accessibility & contrast

On white

19.12

#0A0737 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#0A0737 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0737

19.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0737	#FFFFFF	#000000	##FFFFFF
##0A0737	1.00	19.12	1.10	19.12
#FFFFFF	19.12	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001138

Deuteranopia (green-blind)

#000D36

Tritanopia (blue-blind)

#00151E

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #0a0737;
/* rgb */ color: rgb(10, 7, 55);
/* oklch */ color: oklch(17.9% 0.089 275.6);

Tailwind

colors: {
  custom: {
    50: '#50496e',
    500: '#0a0737',
    950: '#000000',
  },
}

SCSS

$custom: #0a0737;
$custom-light: #50496e;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0737",
  "rgb": {
    "r": 10,
    "g": 7,
    "b": 55
  },
  "hsl": {
    "h": 243.75,
    "s": 77.419,
    "l": 12.157
  },
  "oklch": {
    "l": 0.17892,
    "c": 0.08871,
    "h": 275.6
  },
  "luminance": 0.00492
}

Semantic roles & 50–950 ramp

primary

#0A0737

secondary

#717723

accent

#F434E8

background

#F4F4F6

surface

#E7E6EC

border

#C3C2C7

text

#020007

muted

#78777A

Preview Lab

Preview with #0A0737

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

Preview Lab → · Contrast checker → · Palette generator →