#577C63
Closest named color: Dark Sage (#598556). oklch(55.1% 0.057 154.6), rgb(87, 124, 99).
Aa
White text reads best on this color (4.69:1).
About this color
#577C63 is a medium-dark, muted green. In OKLCH its lightness is 55%, its chroma 0.057 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 0.038 away. White text reads best on it, at 4.69:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.057) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.46:1 |
| White text | 4.69:1 |
Values
| HEX | #577C63 |
| RGB | rgb(87, 124, 99) |
| HSL | hsl(139, 18%, 41%) |
| OKLCH | oklch(55.1% 0.057 154.6) |
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 #577C63 | 4.69:1 | AA | Lc -78.0 | Fine for body text |
| Black text on #577C63 | 4.46:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #577C63 text on white | 4.69:1 | AA | Lc 72.6 | Content text, not long reading |
| #577C63 text on black | 4.46:1 | AA large text | Lc -29.1 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D2DCD5
oklch(88.5% 0.014 155.6)
-
Step 300
300
#B4C6B9
oklch(80.9% 0.027 154.4)
-
Step 400
400
#8DA995
oklch(70.8% 0.042 154.1)
-
Step 500
500
#71937B
oklch(63.1% 0.052 154)
-
Step 600
600 (this color)
#577C63
oklch(55.1% 0.057 154.6)
-
Step 700
700
#486A53
oklch(49.1% 0.054 154.4)
-
Step 800
800
#3C5644
oklch(42.6% 0.043 154)
-
Step 900
900
#334739
oklch(37.6% 0.035 154)
-
Step 950
950
#1E2A22
oklch(27.1% 0.022 155.5)
#577C63 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) | #7C7662 | 0.052 |
| Deuteranopia (no green cones) | #767264 | 0.050 |
| Tritanopia (no blue cones) | #517B75 | 0.029 |
| Achromatopsia (no color) | #747474 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577C63
#577C63
oklch(55.1% 0.057 154.6)
- #87657F
#87657F
oklch(55% 0.057 334.9)
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 #577C63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.038
- Military Green #667C3E ΔE 0.050
- Slate Green #658D6D ΔE 0.054
- Muddy Green #657432 ΔE 0.059
- Battleship Gray #6C757D ΔE 0.060
- Grey Brown #7F7053 ΔE 0.061
- Dark Moss Green #606C38 ΔE 0.061
- Battleship Grey #6B7C85 ΔE 0.062
Use #577C63 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.