#424B33
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.8% 0.04 124.9), rgb(66, 75, 51).
Aa
White text reads best on this color (9.18:1).
About this color
#424B33 is a dark, muted brown. In OKLCH its lightness is 40%, its chroma 0.040 and its hue 125°. 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 9.18:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | muted (0.040) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.28:1 |
| White text | 9.18:1 |
Values
| HEX | #424B33 |
| RGB | rgb(66, 75, 51) |
| HSL | hsl(83, 19%, 25%) |
| OKLCH | oklch(39.8% 0.04 124.9) |
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 #424B33 | 9.18:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #424B33 | 2.28:1 | Fails | Lc 12.8 | Not readable |
| #424B33 text on white | 9.18:1 | AAA | Lc 91.2 | Preferred for body text |
| #424B33 text on black | 2.28:1 | Fails | Lc -11.2 | 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 900.
-
Step 50
50
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E8EBE5
oklch(93.6% 0.009 128.6)
-
Step 200
200
#D6DBCF
oklch(88.4% 0.017 125.3)
-
Step 300
300
#BCC4AF
oklch(80.8% 0.03 124.1)
-
Step 400
400
#9AA686
oklch(70.7% 0.047 124.3)
-
Step 500
500
#819067
oklch(63% 0.061 124.4)
-
Step 600
600
#6A7A4E
oklch(55.5% 0.067 124.8)
-
Step 700
700
#59673F
oklch(49.1% 0.062 124.4)
-
Step 800
800
#485434
oklch(42.6% 0.052 125.3)
-
Step 900
900 (this color)
#424B33
oklch(39.8% 0.04 124.9)
-
Step 950
950
#24291B
oklch(27.1% 0.026 124.1)
#424B33 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) | #4E4831 | 0.020 |
| Deuteranopia (no green cones) | #4C4834 | 0.019 |
| Tritanopia (no blue cones) | #444945 | 0.032 |
| Achromatopsia (no color) | #484848 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424B33
#424B33
oklch(39.8% 0.04 124.9)
- #4C4259
#4C4259
oklch(39.8% 0.04 304.5)
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 #424B33, 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 0.048
- Green Brown #544E03 ΔE 0.054
- Mud Brown #60460F ΔE 0.057
- Dark Blue Green #005249 ΔE 0.059
- Pine #2B5D34 ΔE 0.062
- Navy Green #35530A ΔE 0.063
- Dark Olive #373E02 ΔE 0.065
Use #424B33 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.