#666F33
Closest named color: Dark Moss Green (#606C38). oklch(52% 0.084 116.5), rgb(102, 111, 51).
Aa
White text reads best on this color (5.40:1).
About this color
#666F33 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 52%, its chroma 0.084 and its hue 116°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.015 away. White text reads best on it, at 5.40:1.
| Hue family | Yellows |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.084) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.88:1 |
| White text | 5.40:1 |
Values
| HEX | #666F33 |
| RGB | rgb(102, 111, 51) |
| HSL | hsl(69, 37%, 32%) |
| OKLCH | oklch(52% 0.084 116.5) |
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 #666F33 | 5.40:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #666F33 | 3.88:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #666F33 text on white | 5.40:1 | AA | Lc 76.9 | Fine for body text |
| #666F33 text on black | 3.88:1 | AA large text | Lc -24.9 | 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
#F5F6F2
oklch(97.1% 0.005 117.9)
-
Step 100
100
#E9EBE2
oklch(93.6% 0.012 116.8)
-
Step 200
200
#D8DBCB
oklch(88.5% 0.022 115.5)
-
Step 300
300
#BFC4A7
oklch(80.9% 0.04 115.2)
-
Step 400
400
#9EA678
oklch(70.7% 0.064 116.1)
-
Step 500
500
#869054
oklch(63.1% 0.083 116.6)
-
Step 600
600
#707A38
oklch(55.6% 0.091 116.6)
-
Step 700
700 (this color)
#666F33
oklch(52% 0.084 116.5)
-
Step 800
800
#4D5424
oklch(42.8% 0.07 116.3)
-
Step 900
900
#404522
oklch(37.6% 0.054 115.7)
-
Step 950
950
#252915
oklch(27.1% 0.035 118)
#666F33 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) | #766A2D | 0.026 |
| Deuteranopia (no green cones) | #756B36 | 0.027 |
| Tritanopia (no blue cones) | #6C6961 | 0.073 |
| Achromatopsia (no color) | #6A6A6A | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666F33
#666F33
oklch(52% 0.084 116.5)
- #6E5E94
#6E5E94
oklch(52% 0.085 297)
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 #666F33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.015
- Muddy Green #657432 ΔE 0.015
- Brown Green #706C11 ΔE 0.026
- Browny Green #6F6C0A ΔE 0.028
- Dark Olive Green #556B2F ΔE 0.029
- Military Green #667C3E ΔE 0.037
- Mud Green #606602 ΔE 0.040
- Greeny Brown #696006 ΔE 0.046
Use #666F33 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.