#664103
Closest named color: Mud Brown (#60460F). oklch(40.8% 0.086 72.1), rgb(102, 65, 3).
Aa
White text reads best on this color (9.04:1).
About this color
#664103 is a dark, moderately saturated brown. In OKLCH its lightness is 41%, its chroma 0.086 and its hue 72°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.016 away. White text reads best on it, at 9.04:1.
| Hue family | Browns |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.32:1 |
| White text | 9.04:1 |
Values
| HEX | #664103 |
| RGB | rgb(102, 65, 3) |
| HSL | hsl(38, 94%, 21%) |
| OKLCH | oklch(40.8% 0.086 72.1) |
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 #664103 | 9.04:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #664103 | 2.32:1 | Fails | Lc 13.5 | Not readable |
| #664103 text on white | 9.04:1 | AAA | Lc 90.5 | Preferred for body text |
| #664103 text on black | 2.32:1 | Fails | Lc -11.8 | 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
#E5D7C6
oklch(88.6% 0.028 72.8)
-
Step 300
300
#D5BC9E
oklch(80.9% 0.05 72.1)
-
Step 400
400
#C09968
oklch(70.8% 0.08 72.3)
-
Step 500
500
#B07F3D
oklch(63.2% 0.103 72.1)
-
Step 600
600
#9B6716
oklch(55.6% 0.111 72)
-
Step 700
700
#845504
oklch(49% 0.103 71.9)
-
Step 800
800 (this color)
#664103
oklch(40.8% 0.086 72.1)
-
Step 900
900
#573B14
oklch(37.6% 0.066 72)
-
Step 950
950
#33230D
oklch(27% 0.042 73)
#664103 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) | #4E4300 | 0.046 |
| Deuteranopia (no green cones) | #564C05 | 0.042 |
| Tritanopia (no blue cones) | #703836 | 0.069 |
| Achromatopsia (no color) | #494949 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664103
#664103
oklch(40.8% 0.086 72.1)
- #244C77
#244C77
oklch(40.9% 0.086 252.1)
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 #664103, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.016
- Green Brown #544E03 ΔE 0.049
- Olive Brown #645403 ΔE 0.055
- Chestnut #742802 ΔE 0.064
- Milk Chocolate #7F4E1E ΔE 0.065
- Medium Brown #7F5112 ΔE 0.069
- Purple Brown #673A3F ΔE 0.076
- Saddle Brown #8B4513 ΔE 0.077
Use #664103 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.