#51568F
Closest named color: Twilight (#4E518B). oklch(47.5% 0.092 278.5), rgb(81, 86, 143).
Aa
White text reads best on this color (6.82:1).
About this color
#51568F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.092 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.016 away. White text reads best on it, at 6.82:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.07:1 |
| White text | 6.82:1 |
Values
| HEX | #51568F |
| RGB | rgb(81, 86, 143) |
| HSL | hsl(235, 28%, 44%) |
| OKLCH | oklch(47.5% 0.092 278.5) |
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 #51568F | 6.82:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #51568F | 3.07:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #51568F text on white | 6.82:1 | AA | Lc 83.5 | Fine for body text |
| #51568F text on black | 3.07:1 | AA large text | Lc -18.5 | 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
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D5D8EA
oklch(88.5% 0.025 278.3)
-
Step 300
300
#BABEDE
oklch(80.9% 0.045 279.7)
-
Step 400
400
#969DCD
oklch(70.8% 0.071 278)
-
Step 500
500
#7D84C0
oklch(63.2% 0.09 278.4)
-
Step 600
600
#676DAC
oklch(55.7% 0.098 278.6)
-
Step 700
700 (this color)
#51568F
oklch(47.5% 0.092 278.5)
-
Step 800
800
#464A78
oklch(42.7% 0.076 278.9)
-
Step 900
900
#3A3E61
oklch(37.6% 0.06 278.1)
-
Step 950
950
#222539
oklch(27.1% 0.037 277)
#51568F 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) | #425D91 | 0.026 |
| Deuteranopia (no green cones) | #3E588E | 0.026 |
| Tritanopia (no blue cones) | #3D616B | 0.081 |
| Achromatopsia (no color) | #5B5B5B | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51568F
#51568F
oklch(47.5% 0.092 278.5)
- #6A5C10
#6A5C10
oklch(47.5% 0.092 97.9)
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 #51568F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.016
- Dusk #4E5481 ΔE 0.023
- Dusky Blue #475F94 ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.030
- Dusty Grape #545775 ΔE 0.044
- Denim #3B638C ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.046
- YInMn Blue #415A77 ΔE 0.050
Use #51568F 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.