#577E63
Closest named color: Dark Sage (#598556). oklch(55.6% 0.061 153.8), rgb(87, 126, 99).
Aa
White text reads best on this color (4.59:1).
About this color
#577E63 is a medium-dark, muted green. In OKLCH its lightness is 56%, its chroma 0.061 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.033 away. White text reads best on it, at 4.59:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.061) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.56:1 |
| White text | 4.59:1 |
Values
| HEX | #577E63 |
| RGB | rgb(87, 126, 99) |
| HSL | hsl(138, 18%, 42%) |
| OKLCH | oklch(55.6% 0.061 153.8) |
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 #577E63 | 4.59:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #577E63 | 4.56:1 | AA | Lc 32.2 | Non-text elements, placeholder text |
| #577E63 text on white | 4.59:1 | AA | Lc 71.9 | Content text, not long reading |
| #577E63 text on black | 4.56:1 | AA | Lc -29.8 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E6EBE7
oklch(93.5% 0.008 151.9)
-
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
#8CA994
oklch(70.7% 0.044 153.7)
-
Step 500
500
#6F947A
oklch(63.1% 0.057 153.9)
-
Step 600
600 (this color)
#577E63
oklch(55.6% 0.061 153.8)
-
Step 700
700
#476A52
oklch(49% 0.056 154)
-
Step 800
800
#3B5743
oklch(42.8% 0.047 153)
-
Step 900
900
#324739
oklch(37.6% 0.036 155.2)
-
Step 950
950
#1E2A21
oklch(27.1% 0.023 152.3)
#577E63 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) | #7E7862 | 0.055 |
| Deuteranopia (no green cones) | #777364 | 0.053 |
| Tritanopia (no blue cones) | #517D76 | 0.030 |
| Achromatopsia (no color) | #757575 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577E63
#577E63
oklch(55.6% 0.061 153.8)
- #8A6682
#8A6682
oklch(55.6% 0.061 334.5)
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 #577E63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.033
- Military Green #667C3E ΔE 0.048
- Slate Green #658D6D ΔE 0.049
- Muddy Green #657432 ΔE 0.059
- Sea Green #2E8B57 ΔE 0.059
- Dusty Teal #4C9085 ΔE 0.060
- Swamp #698339 ΔE 0.062
- Grey Brown #7F7053 ΔE 0.063
Use #577E63 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.