#3F452B
Closest named color: Charcoal Grey (#3C4142). oklch(37.7% 0.042 119), rgb(63, 69, 43).
Aa
White text reads best on this color (10.01:1).
About this color
#3F452B is a dark, muted brown. In OKLCH its lightness is 38%, its chroma 0.042 and its hue 119°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.044 away. White text reads best on it, at 10.01:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | muted (0.042) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.09:1 |
| White text | 10.01:1 |
Values
| HEX | #3F452B |
| RGB | rgb(63, 69, 43) |
| HSL | hsl(74, 23%, 22%) |
| OKLCH | oklch(37.7% 0.042 119) |
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 #3F452B | 10.01:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #3F452B | 2.09:1 | Fails | Lc 10.7 | Not readable |
| #3F452B text on white | 10.01:1 | AAA | Lc 93.2 | Preferred for body text |
| #3F452B text on black | 2.09:1 | Fails | Lc -9.3 | 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E9EBE4
oklch(93.7% 0.01 119.6)
-
Step 200
200
#D7DBCE
oklch(88.5% 0.018 120.7)
-
Step 300
300
#BEC4AD
oklch(80.9% 0.032 119)
-
Step 400
400
#9DA682
oklch(70.8% 0.051 119.1)
-
Step 500
500
#858F62
oklch(63% 0.065 118.5)
-
Step 600
600
#6F7949
oklch(55.5% 0.07 118.3)
-
Step 700
700
#5C663A
oklch(49% 0.066 119.4)
-
Step 800
800
#4C5330
oklch(42.6% 0.054 118)
-
Step 900
900 (this color)
#3F452B
oklch(37.7% 0.042 119)
-
Step 950
950
#252819
oklch(26.9% 0.027 117.4)
#3F452B 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) | #484229 | 0.016 |
| Deuteranopia (no green cones) | #48422C | 0.018 |
| Tritanopia (no blue cones) | #41423E | 0.036 |
| Achromatopsia (no color) | #424242 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F452B
#3F452B
oklch(37.7% 0.042 119)
- #453D55
#453D55
oklch(37.8% 0.042 299.7)
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 #3F452B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.044
- Dark Olive #373E02 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.056
- Evergreen #05472A ΔE 0.059
- Onyx #343A40 ΔE 0.061
- Green Brown #544E03 ΔE 0.061
- Mud Brown #60460F ΔE 0.062
- Pine Green #0A481E ΔE 0.064
Use #3F452B 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.