#40514E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.9% 0.022 183.3), rgb(64, 81, 78).
Aa
White text reads best on this color (8.38:1).
About this color
#40514E is a dark close to neutral grey. In OKLCH its lightness is 42%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.024 away. White text reads best on it, at 8.38:1.
| Hue family | Neutrals |
| Lightness | dark (42%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.50:1 |
| White text | 8.38:1 |
Values
| HEX | #40514E |
| RGB | rgb(64, 81, 78) |
| HSL | hsl(169, 12%, 28%) |
| OKLCH | oklch(41.9% 0.022 183.3) |
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 #40514E | 8.38:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #40514E | 2.50:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #40514E text on white | 8.38:1 | AAA | Lc 88.9 | Fine for body text |
| #40514E text on black | 2.50:1 | Fails | Lc -13.3 | 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 800.
-
Step 50
50
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBEA
oklch(93.7% 0.004 179.7)
-
Step 200
200
#D4DBD9
oklch(88.5% 0.008 177.3)
-
Step 300
300
#B8C3C1
oklch(80.8% 0.012 184)
-
Step 400
400
#93A5A2
oklch(70.7% 0.021 184.7)
-
Step 500
500
#798F8B
oklch(63.1% 0.026 183.3)
-
Step 600
600
#617975
oklch(55.6% 0.029 184)
-
Step 700
700
#506662
oklch(49.1% 0.027 182.9)
-
Step 800
800 (this color)
#40514E
oklch(41.9% 0.022 183.3)
-
Step 900
900
#384542
oklch(37.8% 0.018 179.8)
-
Step 950
950
#212827
oklch(27% 0.01 186.1)
#40514E 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) | #4F4F4E | 0.023 |
| Deuteranopia (no green cones) | #4C4D4E | 0.021 |
| Tritanopia (no blue cones) | #3B5250 | 0.007 |
| Achromatopsia (no color) | #4E4E4E | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40514E
#40514E
oklch(41.9% 0.022 183.3)
- #58484C
#58484C
oklch(41.9% 0.023 1.3)
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 #40514E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.024
- Deep Teal #00555A ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.051
- Charcoal #264653 ΔE 0.054
- Dark Blue Green #005249 ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.058
- Dark Teal #014D4E ΔE 0.058
- Dark Green Blue #1F6357 ΔE 0.059
Use #40514E 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.