#515C8D
Closest named color: Dusky Blue (#475F94). oklch(48.7% 0.08 273.5), rgb(81, 92, 141).
Aa
White text reads best on this color (6.43:1).
About this color
#515C8D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.080 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.017 away. White text reads best on it, at 6.43:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.26:1 |
| White text | 6.43:1 |
Values
| HEX | #515C8D |
| RGB | rgb(81, 92, 141) |
| HSL | hsl(229, 27%, 44%) |
| OKLCH | oklch(48.7% 0.08 273.5) |
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 #515C8D | 6.43:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #515C8D | 3.26:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #515C8D text on white | 6.43:1 | AA | Lc 81.9 | Fine for body text |
| #515C8D text on black | 3.26:1 | AA large text | Lc -20.0 | 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 700.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E8
oklch(88.4% 0.022 274.7)
-
Step 300
300
#B8BFDA
oklch(80.8% 0.039 274)
-
Step 400
400
#949EC8
oklch(70.6% 0.063 274.3)
-
Step 500
500
#7A86BA
oklch(63.1% 0.08 273.9)
-
Step 600
600
#636FA6
oklch(55.5% 0.087 273.9)
-
Step 700
700 (this color)
#515C8D
oklch(48.7% 0.08 273.5)
-
Step 800
800
#434C73
oklch(42.6% 0.066 273.4)
-
Step 900
900
#39405D
oklch(37.8% 0.051 273.3)
-
Step 950
950
#212537
oklch(26.9% 0.034 274.3)
#515C8D 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) | #4B618F | 0.015 |
| Deuteranopia (no green cones) | #465C8C | 0.015 |
| Tritanopia (no blue cones) | #3E666E | 0.071 |
| Achromatopsia (no color) | #5F5F5F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515C8D
#515C8D
oklch(48.7% 0.08 273.5)
- #6F5E24
#6F5E24
oklch(48.6% 0.08 92.8)
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 #515C8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.017
- Dusk #4E5481 ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.030
- Twilight #4E518B ΔE 0.032
- Denim #3B638C ΔE 0.032
- Dusty Grape #545775 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.045
Use #515C8D 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.