#4D528B
Closest named color: Twilight (#4E518B). oklch(46.1% 0.092 278.3), rgb(77, 82, 139).
Aa
White text reads best on this color (7.25:1).
About this color
#4D528B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, 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 0.003 away. White text reads best on it, at 7.25:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.89:1 |
| White text | 7.25:1 |
Values
| HEX | #4D528B |
| RGB | rgb(77, 82, 139) |
| HSL | hsl(235, 29%, 42%) |
| OKLCH | oklch(46.1% 0.092 278.3) |
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 #4D528B | 7.25:1 | AAA | Lc -90.0 | Fine for body text |
| Black text on #4D528B | 2.89:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #4D528B text on white | 7.25:1 | AAA | Lc 85.1 | Fine for body text |
| #4D528B text on black | 2.89:1 | Fails | Lc -16.9 | 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
#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
#B9BEDE
oklch(80.8% 0.045 278.3)
-
Step 400
400
#969DCD
oklch(70.8% 0.071 278)
-
Step 500
500
#7D84C0
oklch(63.2% 0.09 278.4)
-
Step 600
600
#666DAD
oklch(55.7% 0.099 277.9)
-
Step 700
700 (this color)
#4D528B
oklch(46.1% 0.092 278.3)
-
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)
#4D528B 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) | #3D598D | 0.027 |
| Deuteranopia (no green cones) | #39558A | 0.027 |
| Tritanopia (no blue cones) | #395E68 | 0.081 |
| Achromatopsia (no color) | #575757 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D528B
#4D528B
oklch(46.1% 0.092 278.3)
- #665807
#665807
oklch(46% 0.092 98)
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 #4D528B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.003
- Dusk #4E5481 ΔE 0.019
- Denim Blue #3B5B92 ΔE 0.032
- Dusky Blue #475F94 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.043
- Dusty Grape #545775 ΔE 0.044
- Dusk Blue #26538D ΔE 0.046
- YInMn Blue #415A77 ΔE 0.048
Use #4D528B 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.