#515D87
Closest named color: Dusky Blue (#475F94). oklch(48.6% 0.069 271.4), rgb(81, 93, 135).
Aa
White text reads best on this color (6.43:1).
About this color
#515D87 is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.069 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.023 away. White text reads best on it, at 6.43:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.26:1 |
| White text | 6.43:1 |
Values
| HEX | #515D87 |
| RGB | rgb(81, 93, 135) |
| HSL | hsl(227, 25%, 42%) |
| OKLCH | oklch(48.6% 0.069 271.4) |
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 #515D87 | 6.43:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #515D87 | 3.26:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #515D87 text on white | 6.43:1 | AA | Lc 81.9 | Fine for body text |
| #515D87 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
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B8C0D7
oklch(80.9% 0.034 270.4)
-
Step 400
400
#949FC3
oklch(70.6% 0.054 271.7)
-
Step 500
500
#7A87B4
oklch(63% 0.07 271.8)
-
Step 600
600
#63719F
oklch(55.6% 0.074 270.9)
-
Step 700
700 (this color)
#515D87
oklch(48.6% 0.069 271.4)
-
Step 800
800
#434D6F
oklch(42.6% 0.058 271.2)
-
Step 900
900
#39405A
oklch(37.7% 0.046 272.4)
-
Step 950
950
#212635
oklch(27.1% 0.029 270.1)
#515D87 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) | #4F6189 | 0.011 |
| Deuteranopia (no green cones) | #4A5C86 | 0.011 |
| Tritanopia (no blue cones) | #40656C | 0.061 |
| Achromatopsia (no color) | #5F5F5F | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515D87
#515D87
oklch(48.6% 0.069 271.4)
- #6E5E2E
#6E5E2E
oklch(48.7% 0.07 91.3)
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 #515D87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.023
- Dusk #4E5481 ΔE 0.027
- Denim #3B638C ΔE 0.030
- Dusty Grape #545775 ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.034
- YInMn Blue #415A77 ΔE 0.036
- Twilight #4E518B ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.044
Use #515D87 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.