#40391D
Closest named color: Dark Olive (#373E02). oklch(34.4% 0.045 95.7), rgb(64, 57, 29).
Aa
White text reads best on this color (11.53:1).
About this color
#40391D is a dark, muted brown. In OKLCH its lightness is 34%, its chroma 0.045 and its hue 96°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.040 away. White text reads best on it, at 11.53:1.
| Hue family | Browns |
| Lightness | dark (34%) |
| Chroma | muted (0.045) |
| Temperature | warm |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.82:1 |
| White text | 11.53:1 |
Values
| HEX | #40391D |
| RGB | rgb(64, 57, 29) |
| HSL | hsl(48, 38%, 18%) |
| OKLCH | oklch(34.4% 0.045 95.7) |
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 #40391D | 11.53:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #40391D | 1.82:1 | Fails | Lc 7.3 | Not readable |
| #40391D text on white | 11.53:1 | AAA | Lc 96.5 | Preferred for body text |
| #40391D text on black | 1.82:1 | Fails | Lc 0.0 | 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
#F6F5F2
oklch(97% 0.004 91.4)
-
Step 100
100
#ECEAE3
oklch(93.7% 0.01 93.6)
-
Step 200
200
#DDD9CC
oklch(88.5% 0.018 92.7)
-
Step 300
300
#C7C1A9
oklch(80.9% 0.033 95.5)
-
Step 400
400
#AAA17B
oklch(70.7% 0.053 96.3)
-
Step 500
500
#968A59
oklch(63.2% 0.069 96)
-
Step 600
600
#80733E
oklch(55.5% 0.074 95.9)
-
Step 700
700
#6C6030
oklch(48.9% 0.069 95.6)
-
Step 800
800
#584F29
oklch(42.7% 0.057 96.4)
-
Step 900
900 (this color)
#40391D
oklch(34.4% 0.045 95.7)
-
Step 950
950
#2B2616
oklch(26.9% 0.028 92.7)
#40391D 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) | #3E381B | 0.006 |
| Deuteranopia (no green cones) | #403A1E | 0.003 |
| Tritanopia (no blue cones) | #453532 | 0.041 |
| Achromatopsia (no color) | #393939 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40391D
#40391D
oklch(34.4% 0.045 95.7)
- #323750
#323750
oklch(34.3% 0.044 275.1)
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 #40391D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.040
- Pakistan Green #283618 ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.055
- Onyx #343A40 ΔE 0.057
- Evergreen #05472A ΔE 0.071
- Pine Green #0A481E ΔE 0.075
- Mud Brown #60460F ΔE 0.077
- Forrest Green #154406 ΔE 0.077
Use #40391D 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.