#644307
Closest named color: Mud Brown (#60460F). oklch(41% 0.083 75.5), rgb(100, 67, 7).
Aa
White text reads best on this color (8.94:1).
About this color
#644307 is a dark, moderately saturated brown. In OKLCH its lightness is 41%, its chroma 0.083 and its hue 75°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.010 away. White text reads best on it, at 8.94:1.
| Hue family | Browns |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.083) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.34:1 |
| White text | 8.94:1 |
Values
| HEX | #644307 |
| RGB | rgb(100, 67, 7) |
| HSL | hsl(39, 87%, 21%) |
| OKLCH | oklch(41% 0.083 75.5) |
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 #644307 | 8.94:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #644307 | 2.34:1 | Fails | Lc 13.7 | Not readable |
| #644307 text on white | 8.94:1 | AAA | Lc 90.3 | Preferred for body text |
| #644307 text on black | 2.34:1 | Fails | Lc -12.0 | 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 800.
-
Step 50
50
#F8F5F1
oklch(97.1% 0.006 75.4)
-
Step 100
100
#EFE9E0
oklch(93.6% 0.014 78.3)
-
Step 200
200
#E4D7C6
oklch(88.5% 0.027 74.7)
-
Step 300
300
#D3BD9F
oklch(80.9% 0.048 75.5)
-
Step 400
400
#BD9A69
oklch(70.7% 0.078 75.3)
-
Step 500
500
#AC813F
oklch(63.2% 0.099 75.9)
-
Step 600
600
#97691A
oklch(55.6% 0.107 75.5)
-
Step 700
700
#81570A
oklch(49% 0.1 75.1)
-
Step 800
800 (this color)
#644307
oklch(41% 0.083 75.5)
-
Step 900
900
#553C15
oklch(37.6% 0.064 75.4)
-
Step 950
950
#32230E
oklch(26.9% 0.041 73.8)
#644307 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) | #4F4500 | 0.041 |
| Deuteranopia (no green cones) | #574D0A | 0.036 |
| Tritanopia (no blue cones) | #6E3A38 | 0.070 |
| Achromatopsia (no color) | #494949 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644307
#644307
oklch(41% 0.083 75.5)
- #2A4B76
#2A4B76
oklch(40.9% 0.082 255.7)
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 #644307, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.010
- Green Brown #544E03 ΔE 0.043
- Olive Brown #645403 ΔE 0.050
- Milk Chocolate #7F4E1E ΔE 0.065
- Medium Brown #7F5112 ΔE 0.068
- Chestnut #742802 ΔE 0.070
- Purple Brown #673A3F ΔE 0.078
- Mud #735C12 ΔE 0.078
Use #644307 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.