#644518
Closest named color: Mud Brown (#60460F). oklch(41.6% 0.073 73.1), rgb(100, 69, 24).
Aa
White text reads best on this color (8.72:1).
About this color
#644518 is a dark, moderately saturated brown. In OKLCH its lightness is 42%, its chroma 0.073 and its hue 73°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.012 away. White text reads best on it, at 8.72:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.40:1 |
| White text | 8.72:1 |
Values
| HEX | #644518 |
| RGB | rgb(100, 69, 24) |
| HSL | hsl(36, 61%, 24%) |
| OKLCH | oklch(41.6% 0.073 73.1) |
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 #644518 | 8.72:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #644518 | 2.40:1 | Fails | Lc 14.2 | Not readable |
| #644518 text on white | 8.72:1 | AAA | Lc 89.8 | Fine for body text |
| #644518 text on black | 2.40:1 | Fails | Lc -12.5 | 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 800.
-
Step 50
50
#F8F5F1
oklch(97.1% 0.006 75.4)
-
Step 100
100
#EFE9E1
oklch(93.7% 0.013 75.4)
-
Step 200
200
#E3D7C8
oklch(88.5% 0.024 73.6)
-
Step 300
300
#D2BDA3
oklch(80.9% 0.043 73.1)
-
Step 400
400
#BB9A71
oklch(70.6% 0.068 72.4)
-
Step 500
500
#AA814A
oklch(63.1% 0.088 73.2)
-
Step 600
600
#956A2C
oklch(55.7% 0.095 73.3)
-
Step 700
700
#7F581E
oklch(49.1% 0.089 73.3)
-
Step 800
800 (this color)
#644518
oklch(41.6% 0.073 73.1)
-
Step 900
900
#543D1D
oklch(37.8% 0.057 73.7)
-
Step 950
950
#312412
oklch(27.1% 0.036 74.3)
#644518 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) | #504712 | 0.039 |
| Deuteranopia (no green cones) | #574E19 | 0.034 |
| Tritanopia (no blue cones) | #6D3D3C | 0.062 |
| Achromatopsia (no color) | #4B4B4B | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644518
#644518
oklch(41.6% 0.073 73.1)
- #2D4E73
#2D4E73
oklch(41.6% 0.073 252.4)
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 #644518, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.012
- Green Brown #544E03 ΔE 0.045
- Olive Brown #645403 ΔE 0.049
- Milk Chocolate #7F4E1E ΔE 0.060
- Medium Brown #7F5112 ΔE 0.064
- Purple Brown #673A3F ΔE 0.070
- Chestnut #742802 ΔE 0.072
- Mud #735C12 ΔE 0.075
Use #644518 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.