#577571
Closest named color: Battleship Gray (#6C757D). oklch(53.8% 0.035 186), rgb(87, 117, 113).
Aa
White text reads best on this color (5.01:1).
About this color
#577571 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.035 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Gray (#6C757D), ΔE 0.036 away. White text reads best on it, at 5.01:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.18:1 |
| White text | 5.01:1 |
Values
| HEX | #577571 |
| RGB | rgb(87, 117, 113) |
| HSL | hsl(172, 15%, 40%) |
| OKLCH | oklch(53.8% 0.035 186) |
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 #577571 | 5.01:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #577571 | 4.18:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #577571 text on white | 5.01:1 | AA | Lc 74.7 | Content text, not long reading |
| #577571 text on black | 4.18:1 | AA large text | Lc -27.1 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EBEA
oklch(93.7% 0.004 179.7)
-
Step 200
200
#D3DBDA
oklch(88.5% 0.009 188.1)
-
Step 300
300
#B6C4C2
oklch(80.9% 0.016 186.6)
-
Step 400
400
#90A6A3
oklch(70.7% 0.025 186.6)
-
Step 500
500
#74908C
oklch(63.1% 0.032 185.8)
-
Step 600
600 (this color)
#577571
oklch(53.8% 0.035 186)
-
Step 700
700
#4C6763
oklch(49.1% 0.033 184.9)
-
Step 800
800
#3E5451
oklch(42.7% 0.027 185.9)
-
Step 900
900
#354543
oklch(37.6% 0.021 186.9)
-
Step 950
950
#1F2927
oklch(27.1% 0.014 181.6)
#577571 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) | #727271 | 0.038 |
| Deuteranopia (no green cones) | #6C6D71 | 0.036 |
| Tritanopia (no blue cones) | #4E7674 | 0.011 |
| Achromatopsia (no color) | #6F6F6F | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577571
#577571
oklch(53.8% 0.035 186)
- #81666B
#81666B
oklch(53.9% 0.035 5.9)
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 #577571, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.036
- Dim Gray #696969 ΔE 0.039
- Battleship Grey #6B7C85 ΔE 0.045
- Metallic Blue #4F738E ΔE 0.049
- Grey Blue #647D8E ΔE 0.050
- Slate #516572 ΔE 0.051
- Bluegreen #017A79 ΔE 0.056
- Deep Aqua #08787F ΔE 0.056
Use #577571 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.