#424C33
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40% 0.042 125.9), rgb(66, 76, 51).
Aa
White text reads best on this color (9.07:1).
About this color
#424C33 is a dark, muted green. In OKLCH its lightness is 40%, its chroma 0.042 and its hue 126°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.046 away. White text reads best on it, at 9.07:1.
| Hue family | Greens |
| Lightness | dark (40%) |
| Chroma | muted (0.042) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #424C33 |
| RGB | rgb(66, 76, 51) |
| HSL | hsl(84, 20%, 25%) |
| OKLCH | oklch(40% 0.042 125.9) |
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 #424C33 | 9.07:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #424C33 | 2.31:1 | Fails | Lc 13.1 | Not readable |
| #424C33 text on white | 9.07:1 | AAA | Lc 90.9 | Preferred for body text |
| #424C33 text on black | 2.31:1 | Fails | Lc -11.4 | 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E8EBE4
oklch(93.6% 0.01 125.7)
-
Step 200
200
#D6DBCF
oklch(88.4% 0.017 125.3)
-
Step 300
300
#BBC5AF
oklch(81% 0.032 127.1)
-
Step 400
400
#99A785
oklch(70.8% 0.05 125.9)
-
Step 500
500
#809166
oklch(63.2% 0.065 125.7)
-
Step 600
600
#697B4D
oklch(55.6% 0.07 126)
-
Step 700
700
#57683E
oklch(49.2% 0.066 126.6)
-
Step 800
800
#485433
oklch(42.6% 0.054 124.9)
-
Step 900
900 (this color)
#424C33
oklch(40% 0.042 125.9)
-
Step 950
950
#23291B
oklch(27% 0.026 126.9)
#424C33 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) | #4F4931 | 0.022 |
| Deuteranopia (no green cones) | #4D4834 | 0.022 |
| Tritanopia (no blue cones) | #434A45 | 0.032 |
| Achromatopsia (no color) | #484848 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424C33
#424C33
oklch(40% 0.042 125.9)
- #4D425A
#4D425A
oklch(40% 0.042 305.4)
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 #424C33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.051
- Green Brown #544E03 ΔE 0.053
- Mud Brown #60460F ΔE 0.057
- Pine #2B5D34 ΔE 0.059
- Dark Blue Green #005249 ΔE 0.059
- Navy Green #35530A ΔE 0.061
- Dark Olive #373E02 ΔE 0.066
Use #424C33 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.