#577377
Closest named color: Battleship Gray (#6C757D). oklch(53.5% 0.033 207.1), rgb(87, 115, 119).
Aa
White text reads best on this color (5.09:1).
About this color
#577377 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.033 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Gray (#6C757D), ΔE 0.032 away. White text reads best on it, at 5.09:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.12:1 |
| White text | 5.09:1 |
Values
| HEX | #577377 |
| RGB | rgb(87, 115, 119) |
| HSL | hsl(188, 16%, 40%) |
| OKLCH | oklch(53.5% 0.033 207.1) |
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 #577377 | 5.09:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #577377 | 4.12:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #577377 text on white | 5.09:1 | AA | Lc 75.1 | Fine for body text |
| #577377 text on black | 4.12:1 | AA large text | Lc -26.6 | 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
#E7EBEB
oklch(93.7% 0.004 197.1)
-
Step 200
200
#D3DBDC
oklch(88.6% 0.009 205.9)
-
Step 300
300
#B6C3C5
oklch(80.8% 0.015 207.9)
-
Step 400
400
#90A5A8
oklch(70.7% 0.024 207.1)
-
Step 500
500
#758F93
oklch(63.1% 0.03 207.8)
-
Step 600
600 (this color)
#577377
oklch(53.5% 0.033 207.1)
-
Step 700
700
#4C666A
oklch(49.1% 0.031 207.9)
-
Step 800
800
#3F5356
oklch(42.7% 0.025 207.6)
-
Step 900
900
#364547
oklch(37.8% 0.02 206.3)
-
Step 950
950
#1F282A
oklch(26.9% 0.013 212.7)
#577377 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) | #6E7177 | 0.032 |
| Deuteranopia (no green cones) | #696C77 | 0.031 |
| Tritanopia (no blue cones) | #4D7574 | 0.015 |
| Achromatopsia (no color) | #6E6E6E | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577377
#577377
oklch(53.5% 0.033 207.1)
- #806663
#806663
oklch(53.5% 0.034 25.9)
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 #577377, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.032
- Dim Gray #696969 ΔE 0.036
- Metallic Blue #4F738E ΔE 0.037
- Battleship Grey #6B7C85 ΔE 0.043
- Slate #516572 ΔE 0.043
- Grey Blue #647D8E ΔE 0.046
- Deep Aqua #08787F ΔE 0.056
- Stormy Blue #507B9C ΔE 0.056
Use #577377 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.