#3F421B
Closest named color: Dark Olive (#373E02). oklch(36.6% 0.059 112.9), rgb(63, 66, 27).
Aa
White text reads best on this color (10.46:1).
About this color
#3F421B is a dark, muted brown. In OKLCH its lightness is 37%, its chroma 0.059 and its hue 113°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.029 away. White text reads best on it, at 10.46:1.
| Hue family | Browns |
| Lightness | dark (37%) |
| Chroma | muted (0.059) |
| Temperature | in between |
| Nearest name | Dark Olive (#373E02) |
| Black text | 2.00:1 |
| White text | 10.46:1 |
Values
| HEX | #3F421B |
| RGB | rgb(63, 66, 27) |
| HSL | hsl(65, 42%, 18%) |
| OKLCH | oklch(36.6% 0.059 112.9) |
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 #3F421B | 10.46:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #3F421B | 2.00:1 | Fails | Lc 9.7 | Not readable |
| #3F421B text on white | 10.46:1 | AAA | Lc 94.3 | Preferred for body text |
| #3F421B text on black | 2.00:1 | Fails | Lc -8.3 | 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
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#EAEBE1
oklch(93.7% 0.013 111.3)
-
Step 200
200
#D9DBC9
oklch(88.5% 0.024 112)
-
Step 300
300
#C0C4A4
oklch(80.9% 0.044 113.2)
-
Step 400
400
#A0A672
oklch(70.7% 0.071 113.6)
-
Step 500
500
#8A8F4D
oklch(63.1% 0.089 112.5)
-
Step 600
600
#74792F
oklch(55.6% 0.097 112.7)
-
Step 700
700
#616621
oklch(49.1% 0.091 113.2)
-
Step 800
800
#4F531D
oklch(42.6% 0.076 113.1)
-
Step 900
900 (this color)
#3F421B
oklch(36.6% 0.059 112.9)
-
Step 950
950
#262812
oklch(26.8% 0.037 113.1)
#3F421B 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) | #473F17 | 0.015 |
| Deuteranopia (no green cones) | #47401D | 0.016 |
| Tritanopia (no blue cones) | #433E39 | 0.052 |
| Achromatopsia (no color) | #3F3F3F | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F421B
#3F421B
oklch(36.6% 0.059 112.9)
- #40395B
#40395B
oklch(36.7% 0.058 292.8)
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 #3F421B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.029
- Pakistan Green #283618 ΔE 0.057
- Evergreen #05472A ΔE 0.058
- Pine Green #0A481E ΔE 0.058
- Green Brown #544E03 ΔE 0.058
- Charcoal Grey #3C4142 ΔE 0.060
- Mud Brown #60460F ΔE 0.061
- Forrest Green #154406 ΔE 0.062
Use #3F421B 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.