#404E45
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.9% 0.023 157), rgb(64, 78, 69).
Aa
White text reads best on this color (8.77:1).
About this color
#404E45 is a dark close to neutral grey. In OKLCH its lightness is 41%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.025 away. White text reads best on it, at 8.77:1.
| Hue family | Neutrals |
| Lightness | dark (41%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.39:1 |
| White text | 8.77:1 |
Values
| HEX | #404E45 |
| RGB | rgb(64, 78, 69) |
| HSL | hsl(141, 10%, 28%) |
| OKLCH | oklch(40.9% 0.023 157) |
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 #404E45 | 8.77:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #404E45 | 2.39:1 | Fails | Lc 13.9 | Not readable |
| #404E45 text on white | 8.77:1 | AAA | Lc 90.0 | Preferred for body text |
| #404E45 text on black | 2.39:1 | Fails | Lc -12.2 | 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
#E8EBE9
oklch(93.7% 0.004 157.2)
-
Step 200
200
#D5DBD7
oklch(88.6% 0.008 157.1)
-
Step 300
300
#BAC3BD
oklch(80.8% 0.013 156.9)
-
Step 400
400
#96A59B
oklch(70.7% 0.022 156.6)
-
Step 500
500
#7C8F83
oklch(63.1% 0.028 157.8)
-
Step 600
600
#65796C
oklch(55.6% 0.031 156.8)
-
Step 700
700
#54665A
oklch(49.1% 0.029 156)
-
Step 800
800 (this color)
#404E45
oklch(40.9% 0.023 157)
-
Step 900
900
#3A453E
oklch(37.8% 0.019 157.5)
-
Step 950
950
#222824
oklch(26.9% 0.011 156.4)
#404E45 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) | #4E4C45 | 0.022 |
| Deuteranopia (no green cones) | #4B4A45 | 0.020 |
| Tritanopia (no blue cones) | #3E4E4B | 0.010 |
| Achromatopsia (no color) | #4B4B4B | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404E45
#404E45
oklch(40.9% 0.023 157)
- #53454F
#53454F
oklch(40.8% 0.025 336.4)
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 #404E45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.025
- Charcoal Grey #3C4142 ΔE 0.043
- Dark Blue Green #005249 ΔE 0.053
- Charcoal #264653 ΔE 0.053
- Deep Teal #00555A ΔE 0.056
- Dark Teal #014D4E ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.060
- Dark Green Blue #1F6357 ΔE 0.067
Use #404E45 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.