#556B09
Closest named color: Mud Green (#606602). oklch(49.2% 0.117 122.9), rgb(85, 107, 9).
Aa
White text reads best on this color (6.01:1).
About this color
#556B09 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 49%, its chroma 0.117 and its hue 123°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mud Green (#606602), ΔE 0.020 away. White text reads best on it, at 6.01:1.
| Hue family | Yellows |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Mud Green (#606602) |
| Black text | 3.49:1 |
| White text | 6.01:1 |
Values
| HEX | #556B09 |
| RGB | rgb(85, 107, 9) |
| HSL | hsl(73, 84%, 23%) |
| OKLCH | oklch(49.2% 0.117 122.9) |
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 #556B09 | 6.01:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #556B09 | 3.49:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #556B09 text on white | 6.01:1 | AA | Lc 79.9 | Fine for body text |
| #556B09 text on black | 3.49:1 | AA large text | Lc -21.9 | 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
#F4F6F1
oklch(97% 0.007 124.4)
-
Step 100
100
#E8ECE0
oklch(93.7% 0.017 121.8)
-
Step 200
200
#D5DDC6
oklch(88.5% 0.032 122.7)
-
Step 300
300
#B9C79F
oklch(80.8% 0.057 123.3)
-
Step 400
400
#96AA6A
oklch(70.7% 0.09 122.8)
-
Step 500
500
#7D953F
oklch(63.2% 0.116 122.8)
-
Step 600
600
#667E19
oklch(55.5% 0.125 122.6)
-
Step 700
700 (this color)
#556B09
oklch(49.2% 0.117 122.9)
-
Step 800
800
#45570E
oklch(42.7% 0.097 123.1)
-
Step 900
900
#3A4815
oklch(37.7% 0.076 123.1)
-
Step 950
950
#222A0E
oklch(27% 0.047 122.9)
#556B09 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) | #726400 | 0.047 |
| Deuteranopia (no green cones) | #6F6316 | 0.048 |
| Tritanopia (no blue cones) | #5A655A | 0.097 |
| Achromatopsia (no color) | #636363 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556B09
#556B09
oklch(49.2% 0.117 122.9)
- #6F4E97
#6F4E97
oklch(49.2% 0.117 303.2)
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 #556B09, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Green #606602 ΔE 0.020
- Dark Olive Green #556B2F ΔE 0.028
- Camo Green #526525 ΔE 0.029
- Camouflage Green #4B6113 ΔE 0.036
- Browny Green #6F6C0A ΔE 0.040
- Brown Green #706C11 ΔE 0.042
- Greeny Brown #696006 ΔE 0.042
- Dark Moss Green #606C38 ΔE 0.044
Use #556B09 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.