#516181
Closest named color: Denim (#3B638C). oklch(49.2% 0.055 263.9), rgb(81, 97, 129).
Aa
White text reads best on this color (6.21:1).
About this color
#516181 is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.055 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.030 away. White text reads best on it, at 6.21:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.37:1 |
| White text | 6.21:1 |
Values
| HEX | #516181 |
| RGB | rgb(81, 97, 129) |
| HSL | hsl(220, 23%, 41%) |
| OKLCH | oklch(49.2% 0.055 263.9) |
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 #516181 | 6.21:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #516181 | 3.37:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #516181 text on white | 6.21:1 | AA | Lc 81.0 | Fine for body text |
| #516181 text on black | 3.37:1 | AA large text | Lc -20.9 | 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
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E3
oklch(88.4% 0.015 264.5)
-
Step 300
300
#B8C1D2
oklch(80.9% 0.026 263.3)
-
Step 400
400
#93A1BC
oklch(70.7% 0.043 263.6)
-
Step 500
500
#798AAB
oklch(63.2% 0.054 263.5)
-
Step 600
600
#627397
oklch(55.6% 0.06 264.9)
-
Step 700
700 (this color)
#516181
oklch(49.2% 0.055 263.9)
-
Step 800
800
#424F68
oklch(42.7% 0.045 263.2)
-
Step 900
900
#384255
oklch(37.8% 0.035 263.1)
-
Step 950
950
#212632
oklch(26.9% 0.024 267.1)
#516181 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) | #566382 | 0.010 |
| Deuteranopia (no green cones) | #515F80 | 0.006 |
| Tritanopia (no blue cones) | #42686C | 0.050 |
| Achromatopsia (no color) | #616161 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516181
#516181
oklch(49.2% 0.055 263.9)
- #705F3C
#705F3C
oklch(49.3% 0.055 84.6)
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 #516181, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.030
- Dusty Grape #545775 ΔE 0.031
- Slate #516572 ΔE 0.031
- YInMn Blue #415A77 ΔE 0.034
- Dusky Blue #475F94 ΔE 0.035
- Dusk #4E5481 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.051
Use #516181 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.