#0A0739#0A0739

#0A0739 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.1% C 0.092 H 275.1°. Best body text is #FFFFFF at 19.05:1 contrast (WCAG AA passes).

Color values

HEX	#0A0739
RGB	rgb(10, 7, 57)
HSL	hsl(244, 78%, 13%)
HSV	hsv(244, 88%, 22%)
CMYK	cmyk(82.5%, 87.7%, 0%, 77.6%)
CIE-LAB	lab(4.62, 18.41, -30.48)
CIE-LCH	lch(4.62, 35.61, 301.13°)
OKLab	oklab(18.15% 0.0082 -0.0913)
OKLCH	oklch(18.15% 0.092 275.1)
XYZ	xyz(0.9394, 0.5118, 3.9194)
Luminance	0.0051 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0739 #363907

analogous

#071D39 #0A0739 #230739

triadic

#0A0739 #390A07 #07390A

tetradic

#0A0739 #39071D #363907 #073923

square

#0A0739 #39071D #363907 #073923

split-complementary

#0A0739 #392307 #1D3907

monochromatic

#05031B #05031B #0A0739 #140E70 #1D14A6

Accessibility & contrast

On white

19.05

#0A0739 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#0A0739 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0739

19.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0739	#FFFFFF	#000000	##FFFFFF
##0A0739	1.00	19.05	1.10	19.05
#FFFFFF	19.05	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00123A

Deuteranopia (green-blind)

#000E38

Tritanopia (blue-blind)

#00161F

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #0a0739;
/* rgb */ color: rgb(10, 7, 57);
/* oklch */ color: oklch(18.1% 0.092 275.1);

Tailwind

colors: {
  custom: {
    50: '#514970',
    500: '#0a0739',
    950: '#000000',
  },
}

SCSS

$custom: #0a0739;
$custom-light: #514970;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0739",
  "rgb": {
    "r": 10,
    "g": 7,
    "b": 57
  },
  "hsl": {
    "h": 243.6,
    "s": 78.125,
    "l": 12.549
  },
  "oklch": {
    "l": 0.1815,
    "c": 0.09166,
    "h": 275.1
  },
  "luminance": 0.00512
}

Semantic roles & 50–950 ramp

primary

#0A0739

secondary

#737923

accent

#F533E9

background

#F4F4F6

surface

#E7E6EC

border

#C3C2C7

text

#020007

muted

#78777A

Preview Lab

Preview with #0A0739

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

Preview Lab → · Contrast checker → · Palette generator →