#0A042E#0A042E

#0A042E is a very dark, moderate blue. Relative luminance 0.003; OKLCH L 16.0% C 0.080 H 280.3°. Best body text is #FFFFFF at 19.63:1 contrast (WCAG AA passes).

Color values

HEX	#0A042E
RGB	rgb(10, 4, 46)
HSL	hsl(249, 84%, 10%)
HSV	hsv(249, 91%, 18%)
CMYK	cmyk(78.3%, 91.3%, 0%, 82%)
CIE-LAB	lab(3.15, 13.53, -24.70)
CIE-LCH	lch(3.15, 28.16, 298.71°)
OKLab	oklab(16.04% 0.0143 -0.0791)
OKLCH	oklch(16.04% 0.08 280.3)
XYZ	xyz(0.6616, 0.3486, 2.6167)
Luminance	0.0035 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A042E #282E04

analogous

#04132E #0A042E #1F042E

triadic

#0A042E #2E0A04 #042E0A

tetradic

#0A042E #2E0413 #282E04 #042E1F

square

#0A042E #2E0413 #282E04 #042E1F

split-complementary

#0A042E #2E1F04 #132E04

monochromatic

#06021C #06021C #0A042E #160966 #220E9F

Accessibility & contrast

On white

19.63

#0A042E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#0A042E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A042E

19.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A042E	#FFFFFF	#000000	##FFFFFF
##0A042E	1.00	19.63	1.07	19.63
#FFFFFF	19.63	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D2F

Deuteranopia (green-blind)

#000A2D

Tritanopia (blue-blind)

#000F18

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #0a042e;
/* rgb */ color: rgb(10, 4, 46);
/* oklch */ color: oklch(16.0% 0.080 280.3);

Tailwind

colors: {
  custom: {
    50: '#4d4867',
    500: '#0a042e',
    950: '#000000',
  },
}

SCSS

$custom: #0a042e;
$custom-light: #4d4867;
$custom-dark: #000000;

JSON

{
  "hex": "#0a042e",
  "rgb": {
    "r": 10,
    "g": 4,
    "b": 46
  },
  "hsl": {
    "h": 248.571,
    "s": 84,
    "l": 9.804
  },
  "oklch": {
    "l": 0.16038,
    "c": 0.08036,
    "h": 280.3
  },
  "luminance": 0.00349
}

Semantic roles & 50–950 ramp

primary

#0A042E

secondary

#65711D

accent

#FA2EDD

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#010006

muted

#77777A

Preview Lab

Preview with #0A042E

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

Preview Lab → · Contrast checker → · Palette generator →