#05181D
Closest named color: Rich Navy (#001219). oklch(19.5% 0.027 217), rgb(5, 24, 29).
Aa
White text reads best on this color (18.18:1).
About this color
#05181D is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.027 away. White text reads best on it, at 18.18:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.18:1 |
Values
| HEX | #05181D |
| RGB | rgb(5, 24, 29) |
| HSL | hsl(193, 71%, 7%) |
| OKLCH | oklch(19.5% 0.027 217) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #05181D | 18.18:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #05181D | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #05181D text on white | 18.18:1 | AAA | Lc 104.8 | Preferred for body text |
| #05181D text on black | 1.15:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3EBEE
oklch(93.5% 0.009 222.1)
-
Step 200
200
#CDDCE1
oklch(88.5% 0.018 219.7)
-
Step 300
300
#AAC6CE
oklch(80.8% 0.032 216.9)
-
Step 400
400
#7CA9B6
oklch(70.7% 0.052 217.5)
-
Step 500
500
#5894A4
oklch(63.2% 0.067 216.8)
-
Step 600
600
#3C7E8F
oklch(55.7% 0.072 217)
-
Step 700
700
#2D6A79
oklch(49.1% 0.067 216.5)
-
Step 800
800
#275663
oklch(42.6% 0.055 218.4)
-
Step 900
900
#254751
oklch(37.7% 0.043 219)
-
Step 950
950 (this color)
#05181D
oklch(19.5% 0.027 217)
#05181D with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #15171D | 0.024 |
| Deuteranopia (no green cones) | #11141D | 0.022 |
| Tritanopia (no blue cones) | #001A1A | 0.013 |
| Achromatopsia (no color) | #151515 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05181D
#05181D
oklch(19.5% 0.027 217)
- #20110C
#20110C
oklch(19.7% 0.027 39.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #05181D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.027
- Rich Black #0D1B2A ΔE 0.030
- Almost Black #070D0D ΔE 0.047
- Dark #1B2431 ΔE 0.065
- Jet #212529 ΔE 0.070
- Oxford Blue #1B263B ΔE 0.080
- Navy Blue #001146 ΔE 0.087
- Dark Navy #000435 ΔE 0.087
Use #05181D in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.