#515C85
Closest named color: Dusk (#4E5481). oklch(48.3% 0.068 272.2), rgb(81, 92, 133).
Aa
White text reads best on this color (6.52:1).
About this color
#515C85 is a medium-dark, muted blue. In OKLCH its lightness is 48%, its chroma 0.068 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.024 away. White text reads best on it, at 6.52:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 3.21:1 |
| White text | 6.52:1 |
Values
| HEX | #515C85 |
| RGB | rgb(81, 92, 133) |
| HSL | hsl(227, 24%, 42%) |
| OKLCH | oklch(48.3% 0.068 272.2) |
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 #515C85 | 6.52:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #515C85 | 3.21:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #515C85 text on white | 6.52:1 | AA | Lc 82.3 | Fine for body text |
| #515C85 text on black | 3.21:1 | AA large text | Lc -19.6 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D5D9E6
oklch(88.6% 0.018 272.3)
-
Step 300
300
#B9C0D6
oklch(80.9% 0.032 271.6)
-
Step 400
400
#959FC2
oklch(70.7% 0.052 272.5)
-
Step 500
500
#7B87B3
oklch(63% 0.068 272.5)
-
Step 600
600
#64719E
oklch(55.6% 0.072 271.5)
-
Step 700
700 (this color)
#515C85
oklch(48.3% 0.068 272.2)
-
Step 800
800
#444D6E
oklch(42.7% 0.056 272.1)
-
Step 900
900
#394059
oklch(37.6% 0.044 272.1)
-
Step 950
950
#222634
oklch(27.1% 0.027 272.1)
#515C85 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) | #4E6087 | 0.012 |
| Deuteranopia (no green cones) | #4A5C84 | 0.010 |
| Tritanopia (no blue cones) | #41646B | 0.060 |
| Achromatopsia (no color) | #5E5E5E | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515C85
#515C85
oklch(48.3% 0.068 272.2)
- #6C5D2F
#6C5D2F
oklch(48.2% 0.067 91.7)
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 #515C85, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.024
- Dusky Blue #475F94 ΔE 0.026
- Dusty Grape #545775 ΔE 0.026
- Denim #3B638C ΔE 0.031
- YInMn Blue #415A77 ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.035
- Twilight #4E518B ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.044
Use #515C85 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.