#557B00
Closest named color: Olive Green (#677A04). oklch(53.4% 0.14 128), rgb(85, 123, 0).
Aa
White text reads best on this color (4.97:1).
About this color
#557B00 is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.140 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 4.97:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.140) |
| Temperature | in between |
| Nearest name | Olive Green (#677A04) |
| Black text | 4.21:1 |
| White text | 4.97:1 |
Values
| HEX | #557B00 |
| RGB | rgb(85, 123, 0) |
| HSL | hsl(79, 100%, 24%) |
| OKLCH | oklch(53.4% 0.14 128) |
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 #557B00 | 4.97:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #557B00 | 4.21:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #557B00 text on white | 4.97:1 | AA | Lc 74.2 | Content text, not long reading |
| #557B00 text on black | 4.21:1 | AA large text | Lc -27.5 | 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
#F4F7F1
oklch(97.2% 0.009 128.6)
-
Step 100
100
#E6ECE0
oklch(93.5% 0.017 128.7)
-
Step 200
200
#D2DEC6
oklch(88.5% 0.035 128.9)
-
Step 300
300
#B5C99E
oklch(80.9% 0.063 128)
-
Step 400
400
#8EAD67
oklch(70.7% 0.101 128.2)
-
Step 500
500
#73983B
oklch(63.2% 0.129 128)
-
Step 600
600 (this color)
#557B00
oklch(53.4% 0.14 128)
-
Step 700
700
#4B6D00
oklch(49% 0.128 127.9)
-
Step 800
800
#3E5907
oklch(42.7% 0.107 127.6)
-
Step 900
900
#344A12
oklch(37.8% 0.085 128.5)
-
Step 950
950
#1F2B0D
oklch(27% 0.052 127.7)
#557B00 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) | #827100 | 0.070 |
| Deuteranopia (no green cones) | #7D6F15 | 0.069 |
| Tritanopia (no blue cones) | #597568 | 0.111 |
| Achromatopsia (no color) | #707070 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557B00
#557B00
oklch(53.4% 0.14 128)
- #8353AA
#8353AA
oklch(53.3% 0.139 307.8)
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 #557B00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Green #677A04 ΔE 0.024
- Dark Grass Green #388004 ΔE 0.031
- Murky Green #6C7A0E ΔE 0.033
- Tree Green #2A7E19 ΔE 0.038
- Sap Green #5C8B15 ΔE 0.048
- Muddy Green #657432 ΔE 0.049
- Swamp #698339 ΔE 0.052
- Military Green #667C3E ΔE 0.053
Use #557B00 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.