#57717F
Closest named color: Metallic Blue (#4F738E). oklch(53.3% 0.038 231.9), rgb(87, 113, 127).
Aa
White text reads best on this color (5.15:1).
About this color
#57717F is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.038 and its hue 232°. 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 5.15:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.07:1 |
| White text | 5.15:1 |
Values
| HEX | #57717F |
| RGB | rgb(87, 113, 127) |
| HSL | hsl(201, 19%, 42%) |
| OKLCH | oklch(53.3% 0.038 231.9) |
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 #57717F | 5.15:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #57717F | 4.07:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #57717F text on white | 5.15:1 | AA | Lc 75.5 | Fine for body text |
| #57717F text on black | 4.07:1 | AA large text | Lc -26.2 | 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
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D3DADE
oklch(88.4% 0.009 232.4)
-
Step 300
300
#B6C3CA
oklch(80.9% 0.017 231)
-
Step 400
400
#90A4AF
oklch(70.7% 0.028 231.8)
-
Step 500
500
#758E9B
oklch(63.2% 0.035 230.6)
-
Step 600
600 (this color)
#57717F
oklch(53.3% 0.038 231.9)
-
Step 700
700
#4D6571
oklch(49.2% 0.034 229.9)
-
Step 800
800
#3F525C
oklch(42.7% 0.029 231.2)
-
Step 900
900
#36444C
oklch(37.8% 0.023 233.2)
-
Step 950
950
#20282C
oklch(27.1% 0.014 229.5)
#57717F 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) | #6A7080 | 0.026 |
| Deuteranopia (no green cones) | #646B7F | 0.024 |
| Tritanopia (no blue cones) | #4A7575 | 0.028 |
| Achromatopsia (no color) | #6D6D6D | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57717F
#57717F
oklch(53.3% 0.038 231.9)
- #7F6759
#7F6759
oklch(53.3% 0.038 51.9)
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 #57717F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.024
- Battleship Gray #6C757D ΔE 0.033
- Slate #516572 ΔE 0.039
- Dim Gray #696969 ΔE 0.040
- Grey Blue #647D8E ΔE 0.043
- Battleship Grey #6B7C85 ΔE 0.044
- Dull Blue #49759C ΔE 0.045
- Stormy Blue #507B9C ΔE 0.046
Use #57717F 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.