#577887
Closest named color: Metallic Blue (#4F738E). oklch(55.3% 0.044 227.8), rgb(87, 120, 135).
Aa
White text reads best on this color (4.72:1).
About this color
#577887 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 55%, its chroma 0.044 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.024 away. White text reads best on it, at 4.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.44:1 |
| White text | 4.72:1 |
Values
| HEX | #577887 |
| RGB | rgb(87, 120, 135) |
| HSL | hsl(199, 22%, 44%) |
| OKLCH | oklch(55.3% 0.044 227.8) |
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 #577887 | 4.72:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #577887 | 4.44:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #577887 text on white | 4.72:1 | AA | Lc 72.8 | Content text, not long reading |
| #577887 text on black | 4.44:1 | AA large text | Lc -28.9 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBDF
oklch(88.6% 0.011 226)
-
Step 300
300
#B4C3CB
oklch(80.8% 0.02 230.8)
-
Step 400
400
#8DA5B0
oklch(70.7% 0.031 227.2)
-
Step 500
500
#708F9D
oklch(63.1% 0.041 227.2)
-
Step 600
600 (this color)
#577887
oklch(55.3% 0.044 227.8)
-
Step 700
700
#486673
oklch(49.2% 0.041 226.7)
-
Step 800
800
#3B535E
oklch(42.7% 0.034 228)
-
Step 900
900
#33454D
oklch(37.8% 0.027 227)
-
Step 950
950
#1E282D
oklch(27% 0.017 229.8)
#577887 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) | #707688 | 0.034 |
| Deuteranopia (no green cones) | #697187 | 0.030 |
| Tritanopia (no blue cones) | #467C7D | 0.030 |
| Achromatopsia (no color) | #737373 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577887
#577887
oklch(55.3% 0.044 227.8)
- #896B5C
#896B5C
oklch(55.3% 0.045 47.9)
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 #577887, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.024
- Grey Blue #647D8E ΔE 0.025
- Battleship Gray #6C757D ΔE 0.029
- Battleship Grey #6B7C85 ΔE 0.030
- Stormy Blue #507B9C ΔE 0.032
- Cerulean #457B9D ΔE 0.036
- Dull Blue #49759C ΔE 0.040
- Slate Gray #708090 ΔE 0.044
Use #577887 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.