#404A39
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.5% 0.031 132.6), rgb(64, 74, 57).
Aa
White text reads best on this color (9.30:1).
About this color
#404A39 is a dark, muted green. In OKLCH its lightness is 39%, its chroma 0.031 and its hue 133°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.037 away. White text reads best on it, at 9.30:1.
| Hue family | Greens |
| Lightness | dark (39%) |
| Chroma | muted (0.031) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.25:1 |
| White text | 9.30:1 |
Values
| HEX | #404A39 |
| RGB | rgb(64, 74, 57) |
| HSL | hsl(95, 13%, 26%) |
| OKLCH | oklch(39.5% 0.031 132.6) |
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 #404A39 | 9.30:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #404A39 | 2.25:1 | Fails | Lc 12.5 | Not readable |
| #404A39 text on white | 9.30:1 | AAA | Lc 91.5 | Preferred for body text |
| #404A39 text on black | 2.25:1 | Fails | Lc -10.9 | 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 900.
-
Step 50
50
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E8EBE6
oklch(93.6% 0.007 132.4)
-
Step 200
200
#D6DBD2
oklch(88.5% 0.013 130.8)
-
Step 300
300
#BBC4B5
oklch(80.9% 0.023 132.6)
-
Step 400
400
#98A68E
oklch(70.7% 0.038 132.2)
-
Step 500
500
#7F9073
oklch(63.2% 0.047 132.5)
-
Step 600
600
#687A5B
oklch(55.6% 0.051 132.4)
-
Step 700
700
#56674B
oklch(49.1% 0.048 133.4)
-
Step 800
800
#47543D
oklch(42.8% 0.04 131.9)
-
Step 900
900 (this color)
#404A39
oklch(39.5% 0.031 132.6)
-
Step 950
950
#23291F
oklch(27.2% 0.02 132.9)
#404A39 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) | #4C4738 | 0.020 |
| Deuteranopia (no green cones) | #4A473A | 0.019 |
| Tritanopia (no blue cones) | #404945 | 0.021 |
| Achromatopsia (no color) | #474747 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404A39
#404A39
oklch(39.5% 0.031 132.6)
- #4C4252
#4C4252
oklch(39.5% 0.029 312.8)
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 #404A39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.037
- Charcoal Grey #3C4142 ΔE 0.038
- Dark Blue Green #005249 ΔE 0.056
- Charcoal #264653 ΔE 0.058
- Dark Teal #014D4E ΔE 0.060
- Onyx #343A40 ΔE 0.063
- Mud Brown #60460F ΔE 0.065
- Green Brown #544E03 ΔE 0.065
Use #404A39 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.