#517288
Closest named color: Metallic Blue (#4F738E). oklch(53.5% 0.051 238.2), rgb(81, 114, 136).
Aa
White text reads best on this color (5.10:1).
About this color
#517288 is a medium-dark, muted blue. In OKLCH its lightness is 54%, its chroma 0.051 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.009 away. White text reads best on it, at 5.10:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.11:1 |
| White text | 5.10:1 |
Values
| HEX | #517288 |
| RGB | rgb(81, 114, 136) |
| HSL | hsl(204, 25%, 43%) |
| OKLCH | oklch(53.5% 0.051 238.2) |
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 #517288 | 5.10:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #517288 | 4.11:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #517288 text on white | 5.10:1 | AA | Lc 75.2 | Fine for body text |
| #517288 text on black | 4.11:1 | AA large text | Lc -26.5 | 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
#E6EBEE
oklch(93.7% 0.007 233.6)
-
Step 200
200
#D2DBE1
oklch(88.6% 0.013 236.6)
-
Step 300
300
#B3C3CE
oklch(80.8% 0.023 237.7)
-
Step 400
400
#8CA4B5
oklch(70.6% 0.037 238.9)
-
Step 500
500
#6F8EA3
oklch(63.1% 0.047 238.1)
-
Step 600
600 (this color)
#517288
oklch(53.5% 0.051 238.2)
-
Step 700
700
#476579
oklch(49.1% 0.048 238.2)
-
Step 800
800
#3A5262
oklch(42.6% 0.04 238.1)
-
Step 900
900
#324450
oklch(37.6% 0.031 237.8)
-
Step 950
950
#1E282F
oklch(27% 0.019 238.9)
#517288 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) | #687189 | 0.030 |
| Deuteranopia (no green cones) | #616B88 | 0.028 |
| Tritanopia (no blue cones) | #3D7879 | 0.041 |
| Achromatopsia (no color) | #6E6E6E | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #517288
#517288
oklch(53.5% 0.051 238.2)
- #846650
#846650
oklch(53.5% 0.051 57.6)
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 #517288, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.009
- Dull Blue #49759C ΔE 0.031
- Stormy Blue #507B9C ΔE 0.035
- Cerulean #457B9D ΔE 0.036
- Battleship Gray #6C757D ΔE 0.041
- Grey Blue #647D8E ΔE 0.043
- Muted Blue #3B719F ΔE 0.043
- Slate #516572 ΔE 0.045
Use #517288 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.