#404B33
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.6% 0.041 128.2), rgb(64, 75, 51).
Aa
White text reads best on this color (9.24:1).
About this color
#404B33 is a dark, muted green. In OKLCH its lightness is 40%, its chroma 0.041 and its hue 128°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.045 away. White text reads best on it, at 9.24:1.
| Hue family | Greens |
| Lightness | dark (40%) |
| Chroma | muted (0.041) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.27:1 |
| White text | 9.24:1 |
Values
| HEX | #404B33 |
| RGB | rgb(64, 75, 51) |
| HSL | hsl(88, 19%, 25%) |
| OKLCH | oklch(39.6% 0.041 128.2) |
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 #404B33 | 9.24:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #404B33 | 2.27:1 | Fails | Lc 12.6 | Not readable |
| #404B33 text on white | 9.24:1 | AAA | Lc 91.3 | Preferred for body text |
| #404B33 text on black | 2.27:1 | Fails | Lc -11.0 | 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 900.
-
Step 50
50
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E8EBE5
oklch(93.6% 0.009 128.6)
-
Step 200
200
#D6DBD0
oklch(88.4% 0.016 126.8)
-
Step 300
300
#BBC5B0
oklch(81% 0.031 128)
-
Step 400
400
#97A786
oklch(70.7% 0.05 128.7)
-
Step 500
500
#7E9168
oklch(63.1% 0.063 128.3)
-
Step 600
600
#677B4F
oklch(55.5% 0.069 128.3)
-
Step 700
700
#566840
oklch(49.2% 0.064 128.3)
-
Step 800
800
#465535
oklch(42.8% 0.054 128.9)
-
Step 900
900 (this color)
#404B33
oklch(39.6% 0.041 128.2)
-
Step 950
950
#23291B
oklch(27% 0.026 126.9)
#404B33 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) | #4D4831 | 0.022 |
| Deuteranopia (no green cones) | #4C4734 | 0.023 |
| Tritanopia (no blue cones) | #414945 | 0.032 |
| Achromatopsia (no color) | #474747 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404B33
#404B33
oklch(39.6% 0.041 128.2)
- #4D4158
#4D4158
oklch(39.7% 0.041 308.3)
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 #404B33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.048
- Green Brown #544E03 ΔE 0.056
- Dark Blue Green #005249 ΔE 0.057
- Mud Brown #60460F ΔE 0.060
- Pine #2B5D34 ΔE 0.061
- Navy Green #35530A ΔE 0.062
- Dark Olive #373E02 ΔE 0.063
Use #404B33 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.