#577A92
Closest named color: Stormy Blue (#507B9C). oklch(56.2% 0.054 238.9), rgb(87, 122, 146).
Aa
Black text reads best on this color (4.60:1).
About this color
#577A92 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.054 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.016 away. Black text reads best on it, at 4.60:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.60:1 |
| White text | 4.56:1 |
Values
| HEX | #577A92 |
| RGB | rgb(87, 122, 146) |
| HSL | hsl(204, 25%, 46%) |
| OKLCH | oklch(56.2% 0.054 238.9) |
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 #577A92 | 4.56:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #577A92 | 4.60:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #577A92 text on white | 4.56:1 | AA | Lc 71.6 | Content text, not long reading |
| #577A92 text on black | 4.60:1 | AA | Lc -30.0 | Non-text elements, placeholder text |
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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E6EBEE
oklch(93.7% 0.007 233.6)
-
Step 200
200
#D1DBE1
oklch(88.6% 0.014 233.8)
-
Step 300
300
#B3C3CF
oklch(80.9% 0.024 240.2)
-
Step 400
400
#8BA5B7
oklch(70.8% 0.039 238.3)
-
Step 500
500
#6E8EA5
oklch(63.1% 0.05 239.8)
-
Step 600
600 (this color)
#577A92
oklch(56.2% 0.054 238.9)
-
Step 700
700
#45657B
oklch(49.1% 0.051 239.2)
-
Step 800
800
#395264
oklch(42.6% 0.043 240.3)
-
Step 900
900
#314451
oklch(37.6% 0.033 238.7)
-
Step 950
950
#1D2830
oklch(27% 0.021 240.1)
#577A92 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) | #6F7993 | 0.031 |
| Deuteranopia (no green cones) | #677392 | 0.027 |
| Tritanopia (no blue cones) | #418082 | 0.043 |
| Achromatopsia (no color) | #767676 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577A92
#577A92
oklch(56.2% 0.054 238.9)
- #8E6E55
#8E6E55
oklch(56.3% 0.055 59.4)
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 #577A92, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.016
- Grey Blue #647D8E ΔE 0.021
- Metallic Blue #4F738E ΔE 0.024
- Cerulean #457B9D ΔE 0.024
- Dull Blue #49759C ΔE 0.030
- Battleship Grey #6B7C85 ΔE 0.033
- Battleship Gray #6C757D ΔE 0.038
- Slate Gray #708090 ΔE 0.039
Use #577A92 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.