#041540#041540

#041540 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.5% C 0.086 H 263.3°. Best body text is #FFFFFF at 17.70:1 contrast (WCAG AA passes).

Color values

HEX	#041540
RGB	rgb(4, 21, 64)
HSL	hsl(223, 88%, 13%)
HSV	hsv(223, 94%, 25%)
CMYK	cmyk(93.8%, 67.2%, 0%, 74.9%)
CIE-LAB	lab(8.41, 12.58, -29.36)
CIE-LCH	lch(8.41, 31.94, 293.20°)
OKLab	oklab(21.5% -0.01 -0.0849)
OKLCH	oklch(21.5% 0.086 263.3)
XYZ	xyz(1.2433, 0.9322, 4.9639)
Luminance	0.0093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 4.28

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#041540 #402F04

analogous

#043340 #041540 #110440

triadic

#041540 #400415 #154004

tetradic

#041540 #400433 #402F04 #044011

square

#041540 #400433 #402F04 #044011

split-complementary

#041540 #401104 #334004

monochromatic

#02091D #02091D #041540 #08287A #0B3BB3

Accessibility & contrast

On white

17.70

#041540 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#041540 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #041540

17.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##041540	#FFFFFF	#000000	##FFFFFF
##041540	1.00	17.70	1.19	17.70
#FFFFFF	17.70	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B41

Deuteranopia (green-blind)

#00163F

Tritanopia (blue-blind)

#002028

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #041540;
/* rgb */ color: rgb(4, 21, 64);
/* oklch */ color: oklch(21.5% 0.086 263.3);

Tailwind

colors: {
  custom: {
    50: '#515175',
    500: '#041540',
    950: '#000000',
  },
}

SCSS

$custom: #041540;
$custom-light: #515175;
$custom-dark: #000000;

JSON

{
  "hex": "#041540",
  "rgb": {
    "r": 4,
    "g": 21,
    "b": 64
  },
  "hsl": {
    "h": 223,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.21503,
    "c": 0.08551,
    "h": 263.3
  },
  "luminance": 0.00932
}

Semantic roles & 50–950 ramp

primary

#041540

secondary

#81651F

accent

#C229FE

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#020208

muted

#78787B

Preview Lab

Preview with #041540

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

Preview Lab → · Contrast checker → · Palette generator →