#4B519B
Closest named color: Twilight (#4E518B). oklch(46.8% 0.118 277.3), rgb(75, 81, 155).
Aa
White text reads best on this color (7.11:1).
About this color
#4B519B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.118 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.026 away. White text reads best on it, at 7.11:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.94:1 |
| White text | 7.11:1 |
Values
| HEX | #4B519B |
| RGB | rgb(75, 81, 155) |
| HSL | hsl(236, 35%, 45%) |
| OKLCH | oklch(46.8% 0.118 277.3) |
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 #4B519B | 7.11:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #4B519B | 2.94:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #4B519B text on white | 7.11:1 | AAA | Lc 84.5 | Fine for body text |
| #4B519B text on black | 2.94:1 | Fails | Lc -17.5 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D3D8EF
oklch(88.5% 0.032 276)
-
Step 300
300
#B7BEE6
oklch(80.9% 0.057 277.3)
-
Step 400
400
#929BDA
oklch(70.6% 0.093 277.5)
-
Step 500
500
#7882CF
oklch(63.1% 0.116 276.9)
-
Step 600
600
#626ABC
oklch(55.6% 0.126 277.2)
-
Step 700
700 (this color)
#4B519B
oklch(46.8% 0.118 277.3)
-
Step 800
800
#424884
oklch(42.7% 0.099 277)
-
Step 900
900
#383D6A
oklch(37.8% 0.077 277.3)
-
Step 950
950
#21243E
oklch(27.1% 0.048 277.6)
#4B519B 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) | #315B9E | 0.038 |
| Deuteranopia (no green cones) | #295599 | 0.040 |
| Tritanopia (no blue cones) | #2A616E | 0.105 |
| Achromatopsia (no color) | #585858 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B519B
#4B519B
oklch(46.8% 0.118 277.3)
- #695A00
#695A00
oklch(46.8% 0.097 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 #4B519B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.038
- Dusky Blue #475F94 ΔE 0.043
- Blueberry #464196 ΔE 0.044
- Dusk #4E5481 ΔE 0.045
- Dusk Blue #26538D ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.057
Use #4B519B 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.