#0A043F#0A043F

#0A043F is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.4% C 0.104 H 274.5°. Best body text is #FFFFFF at 19.06:1 contrast (WCAG AA passes).

Color values

HEX	#0A043F
RGB	rgb(10, 4, 63)
HSL	hsl(246, 88%, 13%)
HSV	hsv(246, 94%, 25%)
CMYK	cmyk(84.1%, 93.7%, 0%, 75.3%)
CIE-LAB	lab(4.61, 23.08, -34.85)
CIE-LCH	lch(4.61, 41.79, 303.51°)
OKLab	oklab(18.38% 0.0082 -0.1039)
OKLCH	oklch(18.38% 0.104 274.5)
XYZ	xyz(1.0655, 0.5101, 4.7440)
Luminance	0.0051 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 2.29

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A043F #393F04

analogous

#041B3F #0A043F #27043F

triadic

#0A043F #3F0A04 #043F0A

tetradic

#0A043F #3F041B #393F04 #043F27

square

#0A043F #3F041B #393F04 #043F27

split-complementary

#0A043F #3F2704 #1B3F04

monochromatic

#05021D #05021D #0A043F #130879 #1C0BB2

Accessibility & contrast

On white

19.06

#0A043F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#0A043F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A043F

19.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A043F	#FFFFFF	#000000	##FFFFFF
##0A043F	1.00	19.06	1.10	19.06
#FFFFFF	19.06	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001241

Deuteranopia (green-blind)

#000D3E

Tritanopia (blue-blind)

#001622

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #0a043f;
/* rgb */ color: rgb(10, 4, 63);
/* oklch */ color: oklch(18.4% 0.104 274.5);

Tailwind

colors: {
  custom: {
    50: '#534775',
    500: '#0a043f',
    950: '#000000',
  },
}

SCSS

$custom: #0a043f;
$custom-light: #534775;
$custom-dark: #000000;

JSON

{
  "hex": "#0a043f",
  "rgb": {
    "r": 10,
    "g": 4,
    "b": 63
  },
  "hsl": {
    "h": 246.102,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.18376,
    "c": 0.10424,
    "h": 274.5
  },
  "luminance": 0.0051
}

Semantic roles & 50–950 ramp

primary

#0A043F

secondary

#76801E

accent

#FE2AE9

background

#F5F4F7

surface

#E9E6ED

border

#C5C2C8

text

#030008

muted

#78777B

Preview Lab

Preview with #0A043F

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

Preview Lab → · Contrast checker → · Palette generator →