#557D40
Closest named color: Military Green (#667C3E). oklch(54.5% 0.1 135.7), rgb(85, 125, 64).
Aa
White text reads best on this color (4.77:1).
About this color
#557D40 is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.100 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Military Green (#667C3E), ΔE 0.021 away. White text reads best on it, at 4.77:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Military Green (#667C3E) |
| Black text | 4.39:1 |
| White text | 4.77:1 |
Values
| HEX | #557D40 |
| RGB | rgb(85, 125, 64) |
| HSL | hsl(99, 32%, 37%) |
| OKLCH | oklch(54.5% 0.1 135.7) |
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 #557D40 | 4.77:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #557D40 | 4.39:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #557D40 text on white | 4.77:1 | AA | Lc 73.1 | Content text, not long reading |
| #557D40 text on black | 4.39:1 | AA large text | Lc -28.6 | 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 600.
-
Step 50
50
#F4F6F2
oklch(97.1% 0.006 128.5)
-
Step 100
100
#E6ECE3
oklch(93.6% 0.014 134.9)
-
Step 200
200
#D2DDCD
oklch(88.5% 0.025 135.7)
-
Step 300
300
#B4C8AB
oklch(81% 0.045 135.9)
-
Step 400
400
#8DAB7E
oklch(70.7% 0.072 135.4)
-
Step 500
500
#70965D
oklch(63% 0.092 135.7)
-
Step 600
600 (this color)
#557D40
oklch(54.5% 0.1 135.7)
-
Step 700
700
#486C35
oklch(49% 0.092 135.7)
-
Step 800
800
#3B582C
oklch(42.6% 0.077 135.8)
-
Step 900
900
#334928
oklch(37.8% 0.06 135.8)
-
Step 950
950
#1E2B18
oklch(27.1% 0.038 136.2)
#557D40 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) | #81753B | 0.063 |
| Deuteranopia (no green cones) | #7B7144 | 0.064 |
| Tritanopia (no blue cones) | #54796F | 0.072 |
| Achromatopsia (no color) | #727272 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557D40
#557D40
oklch(54.5% 0.1 135.7)
- #865D97
#865D97
oklch(54.4% 0.099 315.6)
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 #557D40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Military Green #667C3E ΔE 0.021
- Muddy Green #657432 ΔE 0.030
- Dark Sage #598556 ΔE 0.033
- Swamp #698339 ΔE 0.034
- Olive Green #677A04 ΔE 0.042
- Murky Green #6C7A0E ΔE 0.042
- Fern Green #548D44 ΔE 0.047
- Sea Green #2E8B57 ΔE 0.047
Use #557D40 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.