#3F402A
Closest named color: Charcoal Grey (#3C4142). oklch(36.4% 0.036 110.2), rgb(63, 64, 42).
Aa
White text reads best on this color (10.61:1).
About this color
#3F402A is a dark, muted brown. In OKLCH its lightness is 36%, its chroma 0.036 and its hue 110°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.038 away. White text reads best on it, at 10.61:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | muted (0.036) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.97:1 |
| White text | 10.61:1 |
Values
| HEX | #3F402A |
| RGB | rgb(63, 64, 42) |
| HSL | hsl(63, 21%, 21%) |
| OKLCH | oklch(36.4% 0.036 110.2) |
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 #3F402A | 10.61:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #3F402A | 1.97:1 | Fails | Lc 9.3 | Not readable |
| #3F402A text on white | 10.61:1 | AAA | Lc 94.6 | Preferred for body text |
| #3F402A text on black | 1.97:1 | Fails | Lc -8.0 | 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
#EAEAE5
oklch(93.6% 0.007 106.5)
-
Step 200
200
#D9DACF
oklch(88.5% 0.015 110.9)
-
Step 300
300
#C1C2AF
oklch(80.8% 0.026 109.4)
-
Step 400
400
#A2A385
oklch(70.7% 0.042 109)
-
Step 500
500
#8B8D66
oklch(63.1% 0.055 110.3)
-
Step 600
600
#75774E
oklch(55.7% 0.059 110.5)
-
Step 700
700
#62643E
oklch(49.1% 0.056 110.9)
-
Step 800
800
#505134
oklch(42.6% 0.045 109.8)
-
Step 900
900 (this color)
#3F402A
oklch(36.4% 0.036 110.2)
-
Step 950
950
#27281B
oklch(27.2% 0.023 111.5)
#3F402A 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) | #433E29 | 0.009 |
| Deuteranopia (no green cones) | #443F2B | 0.009 |
| Tritanopia (no blue cones) | #423D3A | 0.032 |
| Achromatopsia (no color) | #3E3E3E | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F402A
#3F402A
oklch(36.4% 0.036 110.2)
- #3E3B50
#3E3B50
oklch(36.4% 0.036 291)
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 #3F402A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.038
- Dark Olive #373E02 ΔE 0.047
- Onyx #343A40 ΔE 0.050
- Pakistan Green #283618 ΔE 0.057
- Evergreen #05472A ΔE 0.063
- Dark Slate Gray #2F4F4F ΔE 0.063
- Charcoal #264653 ΔE 0.068
- Mud Brown #60460F ΔE 0.069
Use #3F402A 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.