#0A1740#0A1740

#0A1740 is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.3% C 0.080 H 266.5°. Best body text is #FFFFFF at 17.36:1 contrast (WCAG AA passes).

Color values

HEX	#0A1740
RGB	rgb(10, 23, 64)
HSL	hsl(226, 73%, 15%)
HSV	hsv(226, 84%, 25%)
CMYK	cmyk(84.4%, 64.1%, 0%, 74.9%)
CIE-LAB	lab(9.38, 11.89, -27.77)
CIE-LCH	lch(9.38, 30.21, 293.19°)
OKLab	oklab(22.32% -0.0049 -0.0801)
OKLCH	oklch(22.32% 0.08 266.5)
XYZ	xyz(1.3567, 1.0473, 4.9802)
Luminance	0.0105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A1740 #40330A

analogous

#0A3240 #0A1740 #180A40

triadic

#0A1740 #400A17 #17400A

tetradic

#0A1740 #400A32 #40330A #0A4018

square

#0A1740 #400A32 #40330A #0A4018

split-complementary

#0A1740 #40180A #32400A

monochromatic

#040A1A #040A1A #0A1740 #122A75 #1B3DAA

Accessibility & contrast

On white

17.36

#0A1740 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#0A1740 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A1740

17.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A1740	#FFFFFF	#000000	##FFFFFF
##0A1740	1.00	17.36	1.21	17.36
#FFFFFF	17.36	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D41

Deuteranopia (green-blind)

#00183F

Tritanopia (blue-blind)

#002128

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0a1740;
/* rgb */ color: rgb(10, 23, 64);
/* oklch */ color: oklch(22.3% 0.080 266.5);

Tailwind

colors: {
  custom: {
    50: '#535375',
    500: '#0a1740',
    950: '#000000',
  },
}

SCSS

$custom: #0a1740;
$custom-light: #535375;
$custom-dark: #000000;

JSON

{
  "hex": "#0a1740",
  "rgb": {
    "r": 10,
    "g": 23,
    "b": 64
  },
  "hsl": {
    "h": 225.556,
    "s": 72.973,
    "l": 14.51
  },
  "oklch": {
    "l": 0.22319,
    "c": 0.08022,
    "h": 266.5
  },
  "luminance": 0.01047
}

Semantic roles & 50–950 ramp

primary

#0A1740

secondary

#7D6929

accent

#C338F0

background

#F5F4F7

surface

#E8E7ED

border

#C4C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0A1740

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

Preview Lab → · Contrast checker → · Palette generator →