#577D6B
Closest named color: Dark Sage (#598556). oklch(55.6% 0.051 163.7), rgb(87, 125, 107).
Aa
White text reads best on this color (4.61:1).
About this color
#577D6B is a medium-dark, muted green. In OKLCH its lightness is 56%, its chroma 0.051 and its hue 164°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.045 away. White text reads best on it, at 4.61:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.051) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.55:1 |
| White text | 4.61:1 |
Values
| HEX | #577D6B |
| RGB | rgb(87, 125, 107) |
| HSL | hsl(152, 18%, 42%) |
| OKLCH | oklch(55.6% 0.051 163.7) |
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 #577D6B | 4.61:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #577D6B | 4.55:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #577D6B text on white | 4.61:1 | AA | Lc 72.0 | Content text, not long reading |
| #577D6B text on black | 4.55:1 | AA | Lc -29.7 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D2DCD7
oklch(88.5% 0.013 164.8)
-
Step 300
300
#B4C6BC
oklch(81% 0.024 161.6)
-
Step 400
400
#8CA89A
oklch(70.6% 0.037 163.7)
-
Step 500
500
#6F9382
oklch(63.1% 0.048 164.4)
-
Step 600
600 (this color)
#577D6B
oklch(55.6% 0.051 163.7)
-
Step 700
700
#476959
oklch(49% 0.047 163.7)
-
Step 800
800
#3B5649
oklch(42.7% 0.039 163.4)
-
Step 900
900
#32473D
oklch(37.7% 0.031 163.9)
-
Step 950
950
#1E2A24
oklch(27.2% 0.02 163)
#577D6B 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) | #7C786A | 0.051 |
| Deuteranopia (no green cones) | #75736C | 0.049 |
| Tritanopia (no blue cones) | #4F7D78 | 0.021 |
| Achromatopsia (no color) | #757575 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577D6B
#577D6B
oklch(55.6% 0.051 163.7)
- #89677B
#89677B
oklch(55.5% 0.052 342.8)
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 #577D6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.045
- Battleship Gray #6C757D ΔE 0.051
- Battleship Grey #6B7C85 ΔE 0.051
- Slate Green #658D6D ΔE 0.053
- Teal #008080 ΔE 0.057
- Dusty Teal #4C9085 ΔE 0.057
- Grey Blue #647D8E ΔE 0.059
- Steel Grey #6F828A ΔE 0.059
Use #577D6B 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.