#517387
Closest named color: Metallic Blue (#4F738E). oklch(53.7% 0.05 234.8), rgb(81, 115, 135).
Aa
White text reads best on this color (5.05:1).
About this color
#517387 is a medium-dark, muted blue. In OKLCH its lightness is 54%, its chroma 0.050 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.011 away. White text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #517387 |
| RGB | rgb(81, 115, 135) |
| HSL | hsl(202, 25%, 42%) |
| OKLCH | oklch(53.7% 0.05 234.8) |
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 #517387 | 5.05:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #517387 | 4.15:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #517387 text on white | 5.05:1 | AA | Lc 74.9 | Content text, not long reading |
| #517387 text on black | 4.15:1 | AA large text | Lc -26.8 | 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
#D2DBE0
oklch(88.6% 0.012 231.7)
-
Step 300
300
#B3C3CD
oklch(80.8% 0.023 235.1)
-
Step 400
400
#8CA5B4
oklch(70.8% 0.035 234.3)
-
Step 500
500
#6F8EA2
oklch(63% 0.046 236.8)
-
Step 600
600 (this color)
#517387
oklch(53.7% 0.05 234.8)
-
Step 700
700
#466577
oklch(49% 0.046 234.5)
-
Step 800
800
#3A5361
oklch(42.8% 0.038 233.4)
-
Step 900
900
#32444F
oklch(37.6% 0.03 235.4)
-
Step 950
950
#1D282E
oklch(26.9% 0.019 232.2)
#517387 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) | #6A7288 | 0.033 |
| Deuteranopia (no green cones) | #626C87 | 0.029 |
| Tritanopia (no blue cones) | #3D7879 | 0.038 |
| Achromatopsia (no color) | #6F6F6F | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #517387
#517387
oklch(53.7% 0.05 234.8)
- #856652
#856652
oklch(53.6% 0.05 54.2)
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 #517387, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.011
- Dull Blue #49759C ΔE 0.033
- Stormy Blue #507B9C ΔE 0.035
- Cerulean #457B9D ΔE 0.036
- Battleship Gray #6C757D ΔE 0.039
- Grey Blue #647D8E ΔE 0.040
- Muted Blue #3B719F ΔE 0.045
- Slate #516572 ΔE 0.046
Use #517387 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.