#557918
Closest named color: Olive Green (#677A04). oklch(53% 0.128 128.5), rgb(85, 121, 24).
Aa
White text reads best on this color (5.07:1).
About this color
#557918 is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.128 and its hue 128°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive Green (#677A04), ΔE 0.024 away. White text reads best on it, at 5.07:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.128) |
| Temperature | in between |
| Nearest name | Olive Green (#677A04) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #557918 |
| RGB | rgb(85, 121, 24) |
| HSL | hsl(82, 67%, 28%) |
| OKLCH | oklch(53% 0.128 128.5) |
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 #557918 | 5.07:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #557918 | 4.13:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #557918 text on white | 5.07:1 | AA | Lc 74.9 | Content text, not long reading |
| #557918 text on black | 4.13:1 | AA large text | Lc -26.8 | 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
#F4F6F1
oklch(97% 0.007 124.4)
-
Step 100
100
#E6ECE1
oklch(93.5% 0.016 130.4)
-
Step 200
200
#D3DEC7
oklch(88.6% 0.033 128)
-
Step 300
300
#B5C8A1
oklch(80.8% 0.057 128.8)
-
Step 400
400
#8FAC6D
oklch(70.7% 0.093 128.7)
-
Step 500
500
#749745
oklch(63.1% 0.117 128.5)
-
Step 600
600 (this color)
#557918
oklch(53% 0.128 128.5)
-
Step 700
700
#4C6D14
oklch(49.2% 0.119 128.5)
-
Step 800
800
#3E5915
oklch(42.7% 0.099 128.9)
-
Step 900
900
#354919
oklch(37.7% 0.076 128.6)
-
Step 950
950
#1F2B10
oklch(27% 0.048 129)
#557918 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) | #7F7000 | 0.062 |
| Deuteranopia (no green cones) | #7A6E22 | 0.063 |
| Tritanopia (no blue cones) | #587367 | 0.101 |
| Achromatopsia (no color) | #6E6E6E | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557918
#557918
oklch(53% 0.128 128.5)
- #8154A4
#8154A4
oklch(53% 0.129 308.6)
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 #557918, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Green #677A04 ΔE 0.024
- Murky Green #6C7A0E ΔE 0.031
- Dark Grass Green #388004 ΔE 0.038
- Muddy Green #657432 ΔE 0.039
- Tree Green #2A7E19 ΔE 0.042
- Military Green #667C3E ΔE 0.044
- Browny Green #6F6C0A ΔE 0.049
- Swamp #698339 ΔE 0.049
Use #557918 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.