#515787
Closest named color: Dusk (#4E5481). oklch(47.3% 0.078 277.5), rgb(81, 87, 135).
Aa
White text reads best on this color (6.85:1).
About this color
#515787 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.078 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.013 away. White text reads best on it, at 6.85:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 3.06:1 |
| White text | 6.85:1 |
Values
| HEX | #515787 |
| RGB | rgb(81, 87, 135) |
| HSL | hsl(233, 25%, 42%) |
| OKLCH | oklch(47.3% 0.078 277.5) |
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 #515787 | 6.85:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #515787 | 3.06:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #515787 text on white | 6.85:1 | AA | Lc 83.6 | Fine for body text |
| #515787 text on black | 3.06:1 | AA large text | Lc -18.3 | 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
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D5D8E7
oklch(88.4% 0.021 276.9)
-
Step 300
300
#BABFD9
oklch(80.9% 0.037 276.9)
-
Step 400
400
#979EC7
oklch(70.8% 0.06 277.2)
-
Step 500
500
#7E85B8
oklch(63.1% 0.077 277.9)
-
Step 600
600
#676EA4
oklch(55.5% 0.084 277.6)
-
Step 700
700 (this color)
#515787
oklch(47.3% 0.078 277.5)
-
Step 800
800
#464B72
oklch(42.6% 0.065 277.7)
-
Step 900
900
#3B3F5C
oklch(37.7% 0.05 277.7)
-
Step 950
950
#222536
oklch(27% 0.032 276.3)
#515787 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) | #475D89 | 0.020 |
| Deuteranopia (no green cones) | #445886 | 0.018 |
| Tritanopia (no blue cones) | #416069 | 0.067 |
| Achromatopsia (no color) | #5A5A5A | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515787
#515787
oklch(47.3% 0.078 277.5)
- #685C22
#685C22
oklch(47.4% 0.079 97.6)
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 #515787, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.013
- Twilight #4E518B ΔE 0.021
- Dusky Blue #475F94 ΔE 0.029
- Dusty Grape #545775 ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.032
- YInMn Blue #415A77 ΔE 0.038
- Denim #3B638C ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.042
Use #515787 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.