#556D00
Closest named color: Mud Green (#606602). oklch(49.7% 0.123 123.4), rgb(85, 109, 0).
Aa
White text reads best on this color (5.87:1).
About this color
#556D00 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 50%, its chroma 0.123 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 0.025 away. White text reads best on it, at 5.87:1.
| Hue family | Yellows |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Mud Green (#606602) |
| Black text | 3.57:1 |
| White text | 5.87:1 |
Values
| HEX | #556D00 |
| RGB | rgb(85, 109, 0) |
| HSL | hsl(73, 100%, 21%) |
| OKLCH | oklch(49.7% 0.123 123.4) |
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 #556D00 | 5.87:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #556D00 | 3.57:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #556D00 text on white | 5.87:1 | AA | Lc 79.2 | Fine for body text |
| #556D00 text on black | 3.57:1 | AA large text | Lc -22.6 | 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
#E7ECE0
oklch(93.6% 0.017 125.3)
-
Step 200
200
#D5DDC6
oklch(88.5% 0.032 122.7)
-
Step 300
300
#B9C89E
oklch(81% 0.059 123.7)
-
Step 400
400
#95AB67
oklch(70.8% 0.095 123.4)
-
Step 500
500
#7B953B
oklch(63% 0.121 123.4)
-
Step 600
600
#647F0F
oklch(55.5% 0.132 123.6)
-
Step 700
700 (this color)
#556D00
oklch(49.7% 0.123 123.4)
-
Step 800
800
#445707
oklch(42.6% 0.101 123.3)
-
Step 900
900
#394812
oklch(37.6% 0.079 123.6)
-
Step 950
950
#222A0C
oklch(26.9% 0.05 122.3)
#556D00 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) | #746500 | 0.052 |
| Deuteranopia (no green cones) | #716411 | 0.052 |
| Tritanopia (no blue cones) | #5A675C | 0.102 |
| Achromatopsia (no color) | #646464 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556D00
#556D00
oklch(49.7% 0.123 123.4)
- #714E9B
#714E9B
oklch(49.7% 0.123 303.2)
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 #556D00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Green #606602 ΔE 0.025
- Dark Olive Green #556B2F ΔE 0.033
- Camo Green #526525 ΔE 0.037
- Browny Green #6F6C0A ΔE 0.040
- Camouflage Green #4B6113 ΔE 0.043
- Brown Green #706C11 ΔE 0.043
- Muddy Green #657432 ΔE 0.046
- Greeny Brown #696006 ΔE 0.048
Use #556D00 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.