#557F63
Closest named color: Dark Sage (#598556). oklch(55.7% 0.064 154.6), rgb(85, 127, 99).
Aa
Black text reads best on this color (4.60:1).
About this color
#557F63 is a medium-dark, muted green. In OKLCH its lightness is 56%, its chroma 0.064 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.030 away. Black text reads best on it, at 4.60:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.064) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.60:1 |
| White text | 4.56:1 |
Values
| HEX | #557F63 |
| RGB | rgb(85, 127, 99) |
| HSL | hsl(140, 20%, 42%) |
| OKLCH | oklch(55.7% 0.064 154.6) |
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 #557F63 | 4.56:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #557F63 | 4.60:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #557F63 text on white | 4.56:1 | AA | Lc 71.6 | Content text, not long reading |
| #557F63 text on black | 4.60:1 | AA | Lc -30.0 | Non-text elements, placeholder text |
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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E6EBE7
oklch(93.5% 0.008 151.9)
-
Step 200
200
#D1DCD4
oklch(88.4% 0.016 154.4)
-
Step 300
300
#B3C6B8
oklch(80.8% 0.028 153.8)
-
Step 400
400
#8BA994
oklch(70.6% 0.045 154.6)
-
Step 500
500
#6D947A
oklch(63% 0.058 155.2)
-
Step 600
600 (this color)
#557F63
oklch(55.7% 0.064 154.6)
-
Step 700
700
#456B52
oklch(49.2% 0.059 154.8)
-
Step 800
800
#395743
oklch(42.7% 0.049 154.6)
-
Step 900
900
#314839
oklch(37.8% 0.038 155.5)
-
Step 950
950
#1D2A21
oklch(27% 0.024 154.3)
#557F63 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) | #7F7961 | 0.058 |
| Deuteranopia (no green cones) | #787465 | 0.056 |
| Tritanopia (no blue cones) | #4E7E77 | 0.032 |
| Achromatopsia (no color) | #767676 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557F63
#557F63
oklch(55.7% 0.064 154.6)
- #8B6683
#8B6683
oklch(55.8% 0.063 334.2)
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 #557F63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.030
- Military Green #667C3E ΔE 0.047
- Slate Green #658D6D ΔE 0.048
- Sea Green #2E8B57 ΔE 0.056
- Dusty Teal #4C9085 ΔE 0.058
- Muddy Green #657432 ΔE 0.060
- Swamp #698339 ΔE 0.060
- Teal #008080 ΔE 0.062
Use #557F63 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.