#666100
Closest named color: Greeny Brown (#696006). oklch(48.2% 0.103 106.2), rgb(102, 97, 0).
Aa
White text reads best on this color (6.41:1).
About this color
#666100 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 48%, its chroma 0.103 and its hue 106°. Its hue sits on the warm side of the wheel. The nearest named color is Greeny Brown (#696006), ΔE 0.007 away. White text reads best on it, at 6.41:1.
| Hue family | Yellows |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.103) |
| Temperature | warm |
| Nearest name | Greeny Brown (#696006) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #666100 |
| RGB | rgb(102, 97, 0) |
| HSL | hsl(57, 100%, 20%) |
| OKLCH | oklch(48.2% 0.103 106.2) |
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 #666100 | 6.41:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #666100 | 3.27:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #666100 text on white | 6.41:1 | AA | Lc 81.7 | Fine for body text |
| #666100 text on black | 3.27:1 | AA large text | Lc -20.2 | 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
#F6F6F1
oklch(97.2% 0.007 106.5)
-
Step 100
100
#EBEBE0
oklch(93.7% 0.015 106.7)
-
Step 200
200
#DBDBC6
oklch(88.6% 0.028 107)
-
Step 300
300
#C4C39E
oklch(80.8% 0.05 106.2)
-
Step 400
400
#A7A469
oklch(70.7% 0.079 105.8)
-
Step 500
500
#918D3E
oklch(63% 0.101 106.3)
-
Step 600
600
#7C7717
oklch(55.7% 0.111 106.3)
-
Step 700
700 (this color)
#666100
oklch(48.2% 0.103 106.2)
-
Step 800
800
#55510C
oklch(42.6% 0.085 106)
-
Step 900
900
#464414
oklch(37.8% 0.067 106.9)
-
Step 950
950
#29280D
oklch(27.1% 0.043 107)
#666100 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) | #6B5D00 | 0.014 |
| Deuteranopia (no green cones) | #6D600C | 0.014 |
| Tritanopia (no blue cones) | #6F5951 | 0.094 |
| Achromatopsia (no color) | #5F5F5F | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666100
#666100
oklch(48.2% 0.103 106.2)
- #5A5495
#5A5495
oklch(48.2% 0.103 286.1)
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 #666100, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Brown #696006 ΔE 0.007
- Mud Green #606602 ΔE 0.017
- Mud #735C12 ΔE 0.029
- Camo Green #526525 ΔE 0.032
- Browny Green #6F6C0A ΔE 0.036
- Brown Green #706C11 ΔE 0.037
- Dark Olive Green #556B2F ΔE 0.038
- Olive Brown #645403 ΔE 0.039
Use #666100 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.