#577B6D
Closest named color: Battleship Gray (#6C757D). oklch(55.1% 0.046 168.6), rgb(87, 123, 109).
Aa
White text reads best on this color (4.70:1).
About this color
#577B6D is a medium-dark, muted green. In OKLCH its lightness is 55%, its chroma 0.046 and its hue 169°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Battleship Gray (#6C757D), ΔE 0.046 away. White text reads best on it, at 4.70:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.046) |
| Temperature | in between |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.45:1 |
| White text | 4.70:1 |
Values
| HEX | #577B6D |
| RGB | rgb(87, 123, 109) |
| HSL | hsl(157, 17%, 41%) |
| OKLCH | oklch(55.1% 0.046 168.6) |
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 #577B6D | 4.70:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #577B6D | 4.45:1 | AA large text | Lc 31.4 | Non-text elements, placeholder text |
| #577B6D text on white | 4.70:1 | AA | Lc 72.7 | Content text, not long reading |
| #577B6D text on black | 4.45:1 | AA large text | Lc -29.0 | 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
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D2DCD8
oklch(88.6% 0.012 170.2)
-
Step 300
300
#B4C5BE
oklch(80.8% 0.021 169.2)
-
Step 400
400
#8DA89D
oklch(70.8% 0.034 168.8)
-
Step 500
500
#719285
oklch(63.1% 0.042 168.9)
-
Step 600
600 (this color)
#577B6D
oklch(55.1% 0.046 168.6)
-
Step 700
700
#48695C
oklch(49.1% 0.044 168.1)
-
Step 800
800
#3C554B
oklch(42.6% 0.035 168)
-
Step 900
900
#33473F
oklch(37.8% 0.029 168.2)
-
Step 950
950
#1E2925
oklch(26.9% 0.017 170.8)
#577B6D 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) | #79766C | 0.047 |
| Deuteranopia (no green cones) | #73726E | 0.045 |
| Tritanopia (no blue cones) | #4E7B77 | 0.017 |
| Achromatopsia (no color) | #737373 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577B6D
#577B6D
oklch(55.1% 0.046 168.6)
- #876776
#876776
oklch(55.1% 0.046 348.9)
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 #577B6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.046
- Battleship Grey #6B7C85 ΔE 0.048
- Dark Sage #598556 ΔE 0.052
- Grey Blue #647D8E ΔE 0.055
- Dim Gray #696969 ΔE 0.056
- Teal #008080 ΔE 0.056
- Steel Grey #6F828A ΔE 0.058
- Bluegreen #017A79 ΔE 0.058
Use #577B6D 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.