#051818
Closest named color: Rich Navy (#001219). oklch(19.3% 0.026 195.2), rgb(5, 24, 24).
Aa
White text reads best on this color (18.25:1).
About this color
#051818 is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.028 away. White text reads best on it, at 18.25:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.25:1 |
Values
| HEX | #051818 |
| RGB | rgb(5, 24, 24) |
| HSL | hsl(180, 66%, 6%) |
| OKLCH | oklch(19.3% 0.026 195.2) |
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 #051818 | 18.25:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #051818 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #051818 text on white | 18.25:1 | AAA | Lc 104.8 | Preferred for body text |
| #051818 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CDDDDC
oklch(88.5% 0.017 192.3)
-
Step 300
300
#ABC7C7
oklch(80.9% 0.03 196.6)
-
Step 400
400
#7DAAAA
oklch(70.6% 0.048 196.1)
-
Step 500
500
#5A9595
oklch(63% 0.062 195.7)
-
Step 600
600
#3E8080
oklch(55.7% 0.067 195.4)
-
Step 700
700
#2F6C6C
oklch(49.1% 0.063 195.3)
-
Step 800
800
#285858
oklch(42.7% 0.052 195.4)
-
Step 900
900
#264848
oklch(37.6% 0.04 195.6)
-
Step 950
950 (this color)
#051818
oklch(19.3% 0.026 195.2)
#051818 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) | #161618 | 0.027 |
| Deuteranopia (no green cones) | #131418 | 0.025 |
| Tritanopia (no blue cones) | #001918 | 0.008 |
| Achromatopsia (no color) | #151515 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051818
#051818
oklch(19.3% 0.026 195.2)
- #1F1011
#1F1011
oklch(19.5% 0.025 15.3)
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 #051818, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.028
- Rich Black #0D1B2A ΔE 0.039
- Almost Black #070D0D ΔE 0.043
- Dark #1B2431 ΔE 0.071
- Jet #212529 ΔE 0.072
- Oxford Blue #1B263B ΔE 0.086
- Very Dark Brown #1D0200 ΔE 0.089
- Dark Brown #341C02 ΔE 0.095
Use #051818 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.