#666121
Closest named color: Greeny Brown (#696006). oklch(48.4% 0.084 104.8), rgb(102, 97, 33).
Aa
White text reads best on this color (6.36:1).
About this color
#666121 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 48%, its chroma 0.084 and its hue 105°. Its hue sits on the warm side of the wheel. The nearest named color is Greeny Brown (#696006), ΔE 0.015 away. White text reads best on it, at 6.36:1.
| Hue family | Browns |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.084) |
| Temperature | warm |
| Nearest name | Greeny Brown (#696006) |
| Black text | 3.29:1 |
| White text | 6.36:1 |
Values
| HEX | #666121 |
| RGB | rgb(102, 97, 33) |
| HSL | hsl(56, 51%, 26%) |
| OKLCH | oklch(48.4% 0.084 104.8) |
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 #666121 | 6.36:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #666121 | 3.29:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #666121 text on white | 6.36:1 | AA | Lc 81.6 | Fine for body text |
| #666121 text on black | 3.29:1 | AA large text | Lc -20.3 | 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
#F6F6F2
oklch(97.2% 0.005 106.5)
-
Step 100
100
#EBEAE2
oklch(93.6% 0.011 100.8)
-
Step 200
200
#DBDAC9
oklch(88.5% 0.023 104.1)
-
Step 300
300
#C4C3A4
oklch(81% 0.042 105.8)
-
Step 400
400
#A6A373
oklch(70.6% 0.066 104.9)
-
Step 500
500
#918C4E
oklch(63% 0.083 104.5)
-
Step 600
600
#7B7631
oklch(55.6% 0.091 105.1)
-
Step 700
700 (this color)
#666121
oklch(48.4% 0.084 104.8)
-
Step 800
800
#55511F
oklch(42.7% 0.07 104.7)
-
Step 900
900
#46431F
oklch(37.7% 0.054 104.4)
-
Step 950
950
#292713
oklch(26.9% 0.034 103.4)
#666121 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) | #6A5E19 | 0.010 |
| Deuteranopia (no green cones) | #6B6125 | 0.010 |
| Tritanopia (no blue cones) | #6E5A54 | 0.078 |
| Achromatopsia (no color) | #5F5F5F | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666121
#666121
oklch(48.4% 0.084 104.8)
- #5A578C
#5A578C
oklch(48.3% 0.084 285.4)
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 #666121, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Brown #696006 ΔE 0.015
- Mud #735C12 ΔE 0.024
- Mud Green #606602 ΔE 0.029
- Camo Green #526525 ΔE 0.031
- Dark Moss Green #606C38 ΔE 0.033
- Dark Olive Green #556B2F ΔE 0.035
- Olive Brown #645403 ΔE 0.038
- Brown Green #706C11 ΔE 0.041
Use #666121 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.