#0A1237#0A1237

#0A1237 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.2% C 0.073 H 269.5°. Best body text is #FFFFFF at 18.19:1 contrast (WCAG AA passes).

Color values

HEX	#0A1237
RGB	rgb(10, 18, 55)
HSL	hsl(229, 69%, 13%)
HSV	hsv(229, 82%, 22%)
CMYK	cmyk(81.8%, 67.3%, 0%, 78.4%)
CIE-LAB	lab(6.98, 11.62, -25.21)
CIE-LCH	lch(6.98, 27.75, 294.74°)
OKLab	oklab(20.22% -0.0006 -0.0729)
OKLCH	oklch(20.22% 0.073 269.5)
XYZ	xyz(1.0308, 0.7729, 3.7085)
Luminance	0.0077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 3.99

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A1237 #372F0A

analogous

#0A2837 #0A1237 #180A37

triadic

#0A1237 #370A12 #12370A

tetradic

#0A1237 #370A28 #372F0A #0A3718

square

#0A1237 #370A28 #372F0A #0A3718

split-complementary

#0A1237 #37180A #28370A

monochromatic

#05081A #05081A #0A1237 #13236B #1D349F

Accessibility & contrast

On white

18.19

#0A1237 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#0A1237 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A1237

18.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A1237	#FFFFFF	#000000	##FFFFFF
##0A1237	1.00	18.19	1.15	18.19
#FFFFFF	18.19	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001838

Deuteranopia (green-blind)

#001336

Tritanopia (blue-blind)

#001B22

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #0a1237;
/* rgb */ color: rgb(10, 18, 55);
/* oklch */ color: oklch(20.2% 0.073 269.5);

Tailwind

colors: {
  custom: {
    50: '#504f6e',
    500: '#0a1237',
    950: '#000000',
  },
}

SCSS

$custom: #0a1237;
$custom-light: #504f6e;
$custom-dark: #000000;

JSON

{
  "hex": "#0a1237",
  "rgb": {
    "r": 10,
    "g": 18,
    "b": 55
  },
  "hsl": {
    "h": 229.333,
    "s": 69.231,
    "l": 12.745
  },
  "oklch": {
    "l": 0.20223,
    "c": 0.07287,
    "h": 269.5
  },
  "luminance": 0.00773
}

Semantic roles & 50–950 ramp

primary

#0A1237

secondary

#746728

accent

#CD3CEC

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #0A1237

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

Preview Lab → · Contrast checker → · Palette generator →