#040A41#040A41

#040A41 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.3% C 0.102 H 267.4°. Best body text is #FFFFFF at 18.67:1 contrast (WCAG AA passes).

Color values

HEX	#040A41
RGB	rgb(4, 10, 65)
HSL	hsl(234, 88%, 14%)
HSV	hsv(234, 94%, 25%)
CMYK	cmyk(93.8%, 84.6%, 0%, 74.5%)
CIE-LAB	lab(5.64, 20.24, -34.60)
CIE-LCH	lch(5.64, 40.09, 300.33°)
OKLab	oklab(19.3% -0.0046 -0.1017)
OKLCH	oklch(19.3% 0.102 267.4)
XYZ	xyz(1.1124, 0.6244, 5.0619)
Luminance	0.0063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 2.02

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040A41 #413B04

analogous

#042841 #040A41 #1C0441

triadic

#040A41 #41040A #0A4104

tetradic

#040A41 #410428 #413B04 #04411C

square

#040A41 #410428 #413B04 #04411C

split-complementary

#040A41 #411C04 #284104

monochromatic

#02041D #02041D #040A41 #08137B #0B1CB4

Accessibility & contrast

On white

18.67

#040A41 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#040A41 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040A41

18.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040A41	#FFFFFF	#000000	##FFFFFF
##040A41	1.00	18.67	1.13	18.67
#FFFFFF	18.67	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001643

Deuteranopia (green-blind)

#000F40

Tritanopia (blue-blind)

#001A25

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #040a41;
/* rgb */ color: rgb(4, 10, 65);
/* oklch */ color: oklch(19.3% 0.102 267.4);

Tailwind

colors: {
  custom: {
    50: '#524a76',
    500: '#040a41',
    950: '#000000',
  },
}

SCSS

$custom: #040a41;
$custom-light: #524a76;
$custom-dark: #000000;

JSON

{
  "hex": "#040a41",
  "rgb": {
    "r": 4,
    "g": 10,
    "b": 65
  },
  "hsl": {
    "h": 234.098,
    "s": 88.406,
    "l": 13.529
  },
  "oklch": {
    "l": 0.19302,
    "c": 0.10181,
    "h": 267.4
  },
  "luminance": 0.00625
}

Semantic roles & 50–950 ramp

primary

#040A41

secondary

#82781F

accent

#EA29FF

background

#F5F4F7

surface

#E8E7ED

border

#C4C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #040A41

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

Preview Lab → · Contrast checker → · Palette generator →