#665B23
Closest named color: Mud (#735C12). oklch(47% 0.077 98.2), rgb(102, 91, 35).
Aa
White text reads best on this color (6.80:1).
About this color
#665B23 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 47%, its chroma 0.077 and its hue 98°. Its hue sits on the warm side of the wheel. The nearest named color is Mud (#735C12), ΔE 0.024 away. White text reads best on it, at 6.80:1.
| Hue family | Browns |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.077) |
| Temperature | warm |
| Nearest name | Mud (#735C12) |
| Black text | 3.08:1 |
| White text | 6.80:1 |
Values
| HEX | #665B23 |
| RGB | rgb(102, 91, 35) |
| HSL | hsl(50, 49%, 27%) |
| OKLCH | oklch(47% 0.077 98.2) |
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 #665B23 | 6.80:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #665B23 | 3.08:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #665B23 text on white | 6.80:1 | AA | Lc 83.4 | Fine for body text |
| #665B23 text on black | 3.08:1 | AA large text | Lc -18.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#F6F5F2
oklch(97% 0.004 91.4)
-
Step 100
100
#EBEAE2
oklch(93.6% 0.011 100.8)
-
Step 200
200
#DCDACA
oklch(88.6% 0.022 101)
-
Step 300
300
#C6C1A6
oklch(80.8% 0.037 98.5)
-
Step 400
400
#AAA177
oklch(70.6% 0.059 97.5)
-
Step 500
500
#958A53
oklch(63% 0.076 98.3)
-
Step 600
600
#807437
oklch(55.7% 0.083 98.4)
-
Step 700
700 (this color)
#665B23
oklch(47% 0.077 98.2)
-
Step 800
800
#584F24
oklch(42.6% 0.063 97.7)
-
Step 900
900
#484222
oklch(37.7% 0.049 98.9)
-
Step 950
950
#2A2714
oklch(27% 0.032 100.4)
#665B23 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) | #64591D | 0.008 |
| Deuteranopia (no green cones) | #675D26 | 0.006 |
| Tritanopia (no blue cones) | #6E544F | 0.071 |
| Achromatopsia (no color) | #5B5B5B | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665B23
#665B23
oklch(47% 0.077 98.2)
- #515685
#515685
oklch(47% 0.076 278.4)
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 #665B23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud #735C12 ΔE 0.024
- Olive Brown #645403 ΔE 0.026
- Greeny Brown #696006 ΔE 0.027
- Camo Green #526525 ΔE 0.041
- Mud Green #606602 ΔE 0.045
- Army Green #4B5D16 ΔE 0.047
- Medium Brown #7F5112 ΔE 0.048
- Dark Moss Green #606C38 ΔE 0.048
Use #665B23 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.