#424B39
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.9% 0.032 129.4), rgb(66, 75, 57).
Aa
White text reads best on this color (9.14:1).
About this color
#424B39 is a dark, muted green. In OKLCH its lightness is 40%, its chroma 0.032 and its hue 129°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.038 away. White text reads best on it, at 9.14:1.
| Hue family | Greens |
| Lightness | dark (40%) |
| Chroma | muted (0.032) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.29:1 |
| White text | 9.14:1 |
Values
| HEX | #424B39 |
| RGB | rgb(66, 75, 57) |
| HSL | hsl(90, 14%, 26%) |
| OKLCH | oklch(39.9% 0.032 129.4) |
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 #424B39 | 9.14:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #424B39 | 2.29:1 | Fails | Lc 12.9 | Not readable |
| #424B39 text on white | 9.14:1 | AAA | Lc 91.1 | Preferred for body text |
| #424B39 text on black | 2.29:1 | Fails | Lc -11.3 | 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 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
#BCC4B4
oklch(81% 0.024 128.8)
-
Step 400
400
#99A68D
oklch(70.8% 0.038 129.8)
-
Step 500
500
#809071
oklch(63.2% 0.049 130)
-
Step 600
600
#697A59
oklch(55.6% 0.053 130.1)
-
Step 700
700
#586649
oklch(49% 0.048 129)
-
Step 800
800
#48543C
oklch(42.8% 0.041 129.6)
-
Step 900
900 (this color)
#424B39
oklch(39.9% 0.032 129.4)
-
Step 950
950
#23281E
oklch(26.8% 0.019 129.3)
#424B39 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) | #4D4838 | 0.019 |
| Deuteranopia (no green cones) | #4B483A | 0.017 |
| Tritanopia (no blue cones) | #434946 | 0.025 |
| Achromatopsia (no color) | #484848 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424B39
#424B39
oklch(39.9% 0.032 129.4)
- #4C4355
#4C4355
oklch(39.9% 0.032 307.6)
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 #424B39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.042
- Dark Blue Green #005249 ΔE 0.057
- Charcoal #264653 ΔE 0.062
- Green Brown #544E03 ΔE 0.062
- Mud Brown #60460F ΔE 0.062
- Dark Teal #014D4E ΔE 0.062
- Pine #2B5D34 ΔE 0.066
Use #424B39 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.