#051815
Closest named color: Rich Navy (#001219). oklch(19.2% 0.027 182.1), rgb(5, 24, 21).
Aa
White text reads best on this color (18.29:1).
About this color
#051815 is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.030 away. White text reads best on it, at 18.29:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.14:1 |
| White text | 18.29:1 |
Values
| HEX | #051815 |
| RGB | rgb(5, 24, 21) |
| HSL | hsl(171, 66%, 6%) |
| OKLCH | oklch(19.2% 0.027 182.1) |
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 #051815 | 18.29:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #051815 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #051815 text on white | 18.29:1 | AAA | Lc 104.9 | Preferred for body text |
| #051815 text on black | 1.14:1 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CDDDDA
oklch(88.5% 0.018 183.5)
-
Step 300
300
#ABC8C2
oklch(81% 0.032 181.6)
-
Step 400
400
#7EABA3
oklch(70.6% 0.05 182.7)
-
Step 500
500
#5B968C
oklch(63% 0.064 182.2)
-
Step 600
600
#3F8176
oklch(55.7% 0.07 181.4)
-
Step 700
700
#306D63
oklch(49.1% 0.065 181.3)
-
Step 800
800
#295951
oklch(42.8% 0.054 181.4)
-
Step 900
900
#264943
oklch(37.7% 0.042 181.6)
-
Step 950
950 (this color)
#051815
oklch(19.2% 0.027 182.1)
#051815 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) | #171615 | 0.029 |
| Deuteranopia (no green cones) | #131415 | 0.026 |
| Tritanopia (no blue cones) | #001917 | 0.008 |
| Achromatopsia (no color) | #151515 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051815
#051815
oklch(19.2% 0.027 182.1)
- #1E0F13
#1E0F13
oklch(19.1% 0.026 2.5)
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 #051815, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.030
- Almost Black #070D0D ΔE 0.043
- Rich Black #0D1B2A ΔE 0.045
- Dark #1B2431 ΔE 0.074
- Jet #212529 ΔE 0.075
- Very Dark Brown #1D0200 ΔE 0.088
- Oxford Blue #1B263B ΔE 0.090
- Dark Forest Green #002D04 ΔE 0.092
Use #051815 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.