#664310
Closest named color: Mud Brown (#60460F). oklch(41.4% 0.08 71.4), rgb(102, 67, 16).
Aa
White text reads best on this color (8.84:1).
About this color
#664310 is a dark, moderately saturated brown. In OKLCH its lightness is 41%, its chroma 0.080 and its hue 71°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.014 away. White text reads best on it, at 8.84:1.
| Hue family | Browns |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.080) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.37:1 |
| White text | 8.84:1 |
Values
| HEX | #664310 |
| RGB | rgb(102, 67, 16) |
| HSL | hsl(36, 73%, 23%) |
| OKLCH | oklch(41.4% 0.08 71.4) |
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 #664310 | 8.84:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #664310 | 2.37:1 | Fails | Lc 14.0 | Not readable |
| #664310 text on white | 8.84:1 | AAA | Lc 90.0 | Preferred for body text |
| #664310 text on black | 2.37:1 | Fails | Lc -12.2 | 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
#F0E9E0
oklch(93.7% 0.014 74.4)
-
Step 200
200
#E4D7C7
oklch(88.5% 0.026 73.2)
-
Step 300
300
#D4BCA0
oklch(80.8% 0.047 71.4)
-
Step 400
400
#BE996C
oklch(70.6% 0.075 71.6)
-
Step 500
500
#AE7F44
oklch(63.1% 0.096 70.8)
-
Step 600
600
#996823
oklch(55.7% 0.104 71.3)
-
Step 700
700
#825615
oklch(49% 0.096 71.4)
-
Step 800
800 (this color)
#664310
oklch(41.4% 0.08 71.4)
-
Step 900
900
#563C19
oklch(37.8% 0.062 72)
-
Step 950
950
#32230F
oklch(26.9% 0.039 72.7)
#664310 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) | #4F4507 | 0.045 |
| Deuteranopia (no green cones) | #574E12 | 0.040 |
| Tritanopia (no blue cones) | #703A39 | 0.065 |
| Achromatopsia (no color) | #4A4A4A | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664310
#664310
oklch(41.4% 0.08 71.4)
- #284D75
#284D75
oklch(41.3% 0.08 251.9)
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 #664310, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.014
- Green Brown #544E03 ΔE 0.048
- Olive Brown #645403 ΔE 0.052
- Milk Chocolate #7F4E1E ΔE 0.060
- Medium Brown #7F5112 ΔE 0.065
- Chestnut #742802 ΔE 0.067
- Purple Brown #673A3F ΔE 0.072
- Saddle Brown #8B4513 ΔE 0.074
Use #664310 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.