#4B538B
Closest named color: Twilight (#4E518B). oklch(46.2% 0.091 276.1), rgb(75, 83, 139).
Aa
White text reads best on this color (7.21:1).
About this color
#4B538B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.091 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.007 away. White text reads best on it, at 7.21:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.90:1 |
| White text | 7.21:1 |
Values
| HEX | #4B538B |
| RGB | rgb(75, 83, 139) |
| HSL | hsl(233, 30%, 42%) |
| OKLCH | oklch(46.2% 0.091 276.1) |
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 #4B538B | 7.21:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #4B538B | 2.90:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #4B538B text on white | 7.21:1 | AAA | Lc 85.0 | Fine for body text |
| #4B538B text on black | 2.90:1 | Fails | Lc -17.0 | 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
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EA
oklch(88.5% 0.025 275.9)
-
Step 300
300
#B8BFDE
oklch(80.9% 0.044 275.3)
-
Step 400
400
#949DCD
oklch(70.6% 0.071 276.2)
-
Step 500
500
#7A85C0
oklch(63.1% 0.09 275.4)
-
Step 600
600
#646EAC
oklch(55.7% 0.097 275.8)
-
Step 700
700 (this color)
#4B538B
oklch(46.2% 0.091 276.1)
-
Step 800
800
#444B78
oklch(42.8% 0.075 276)
-
Step 900
900
#393F61
oklch(37.8% 0.059 275.6)
-
Step 950
950
#212539
oklch(27% 0.038 274.9)
#4B538B 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) | #3E5A8D | 0.024 |
| Deuteranopia (no green cones) | #39558A | 0.024 |
| Tritanopia (no blue cones) | #355E68 | 0.080 |
| Achromatopsia (no color) | #575757 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B538B
#4B538B
oklch(46.2% 0.091 276.1)
- #685809
#685809
oklch(46.3% 0.092 96.2)
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 #4B538B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.007
- Dusk #4E5481 ΔE 0.018
- Denim Blue #3B5B92 ΔE 0.028
- Dusky Blue #475F94 ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.039
- Dusty Grape #545775 ΔE 0.043
- Dusk Blue #26538D ΔE 0.044
- YInMn Blue #415A77 ΔE 0.045
Use #4B538B 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.