#3F421D
Closest named color: Dark Olive (#373E02). oklch(36.7% 0.056 113), rgb(63, 66, 29).
Aa
White text reads best on this color (10.45:1).
About this color
#3F421D is a dark, muted brown. In OKLCH its lightness is 37%, its chroma 0.056 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 0.031 away. White text reads best on it, at 10.45:1.
| Hue family | Browns |
| Lightness | dark (37%) |
| Chroma | muted (0.056) |
| Temperature | in between |
| Nearest name | Dark Olive (#373E02) |
| Black text | 2.00:1 |
| White text | 10.45:1 |
Values
| HEX | #3F421D |
| RGB | rgb(63, 66, 29) |
| HSL | hsl(65, 39%, 19%) |
| OKLCH | oklch(36.7% 0.056 113) |
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 #3F421D | 10.45:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #3F421D | 2.00:1 | Fails | Lc 9.7 | Not readable |
| #3F421D text on white | 10.45:1 | AAA | Lc 94.2 | Preferred for body text |
| #3F421D 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
#F5F6F2
oklch(97.1% 0.005 117.9)
-
Step 100
100
#EAEBE2
oklch(93.7% 0.012 111.8)
-
Step 200
200
#D9DBCA
oklch(88.5% 0.023 112.3)
-
Step 300
300
#C0C4A5
oklch(80.9% 0.042 113.3)
-
Step 400
400
#A0A574
oklch(70.6% 0.068 112.9)
-
Step 500
500
#8A8F50
oklch(63.1% 0.086 112.5)
-
Step 600
600
#747933
oklch(55.6% 0.093 112.8)
-
Step 700
700
#616625
oklch(49.2% 0.088 113.3)
-
Step 800
800
#4F5320
oklch(42.7% 0.073 113.2)
-
Step 900
900 (this color)
#3F421D
oklch(36.7% 0.056 113)
-
Step 950
950
#262813
oklch(26.9% 0.036 113.3)
#3F421D 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) | #473F1A | 0.015 |
| Deuteranopia (no green cones) | #47401F | 0.016 |
| Tritanopia (no blue cones) | #433E3A | 0.051 |
| Achromatopsia (no color) | #3F3F3F | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F421D
#3F421D
oklch(36.7% 0.056 113)
- #40395A
#40395A
oklch(36.7% 0.056 293.1)
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 #3F421D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.031
- Pakistan Green #283618 ΔE 0.057
- Charcoal Grey #3C4142 ΔE 0.058
- Evergreen #05472A ΔE 0.058
- Pine Green #0A481E ΔE 0.059
- Green Brown #544E03 ΔE 0.059
- Mud Brown #60460F ΔE 0.061
- Forrest Green #154406 ΔE 0.063
Use #3F421D 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.